Dictionary of Astronomy Companion Website
Astronomy
Illustrations
Author's website
Please follow this link to find a list of addenda and corrigenda on the author’s personal website:
http://www.ianridpath.com/books/oxforddictionary.htm
Web links
Here is a list of recommended web links, arranged alphabetically by the relevant dictionary entries:
A B C D E F G H I J K L M N O P R S T U V W X Y Z
Abell catalogue
http://cdsarc.u-strasbg.fr/viz-bin/Cat?VII/110A
Detailed description and full catalogue downloadable from the CDS.
Advanced Composition Explorer
http://www.srl.caltech.edu/ACE/
Official mission website.
Advanced Technology Solar Telescope
http://atst.nso.edu
Official telescope website.
Agile
http://agile.rm.iasf.cnr.it
Official mission website.
AGK
http://cdsarc.u-strasbg.fr/viz-bin/Cat?I/61B
Detailed description and full catalogue downloadable from the CDS.
Alexis
http://imagine.gsfc.nasa.gov/docs/sats_n_data/missions/alexi...
Mission summary at NASA’s Imagine the Universe.
Algonquin Radio Observatory
http://www.arocanada.com
Official observatory website.
Allegheny Observatory
http://www.pitt.edu/~aobsvtry
Official observatory website.
Allen Telescope Array
http://www.seti.org/ata
Official telescope website.
American Association of Variable Star Observers
http://www.aavso.org
Official website.
American Astronomical Society
http://www.aas.org
Official website.
Ames Research Center
http://www.nasa.gov/centers/ames/home/index.html
Official website.
Anglo-Australian Telescope
http://www.aao.gov.au/AAO/about/aat.html
Official telescope website.
Apache Point Observatory
http://www.apo.nmsu.edu
Official observatory website.
Arecibo Observatory
http://www.naic.edu
Official observatory website.
Arend-Roland, Comet
http://cometography.com/lcomets/1956r1.html
Information page at Cometography website.
Ariel satellites
http://heasarc.gsfc.nasa.gov/docs/ariel5/ariel5.html
Information page at Goddard Space Flight Center.
Aristarchos Telescope
http://www.astro.noa.gr/helmos
Official telescope website.
Arizona Radio Observatory
http://aro.as.arizona.edu
Official observatory website.
ASCA
http://heasarc.gsfc.nasa.gov/docs/asca
Information page at Goddard Space Flight Center.
Association of Universities for Research in Astronomy
http://www.aura-astronomy.org
Official website. This link no longer works and we are unable to find a suitable alternative.
asteroid
http://ssd.jpl.nasa.gov/sbdb.cgi
Small-body Database Browser at NASA's Jet Propulsion Laboratory. Find orbital and physical data for any known asteroid.
astrobleme
http://www.passc.net/EarthImpactDatabase/index.html
Database of terrestrial impact structures.
Astrographic Catalogue
http://cdsarc.u-strasbg.fr/viz-bin/Cat?I/275
Detailed description and full catalogue downloadable from the CDS.
Astronomical Almanac
http://asa.hmnao.com
UK official site. Some free online content.
http://asa.usno.navy.mil
US official site. Some free online content.
Astronomical Journal
http://iopscience.iop.org/1538-3881
Official website with contents and abstracts of recent issues and free online access to older issues.
Astronomical Netherlands Satellite
http://heasarc.gsfc.nasa.gov/docs/ans/ans.html
Information page at Goddard Space Flight Center.
Astronomical Society of the Pacific
http://www.astrosociety.org
Official website.
Astronomy and Astrophysics
http://www.aanda.org
Official website with contents and abstracts of recent issues and free online access to older issues.
Astrophysical Journal
http://iopscience.iop.org/0004-637X
Official website with contents and abstracts of recent issues and free online access to older issues.
Astrophysics Data System
http://adsabs.harvard.edu/index.html
Official ADS wesbite, allowing search of their digital library.
ASTROSAT
http://astrosat.iucaa.in/
Official mission website.
Atacama Cosmology Telescope (ACT)
http://www.physics.princeton.edu/act
Official telescope website.
Atacama Large Millimeter Array
http://www.almaobservatory.org
Official telescope website.
https://science.nrao.edu/facilities/alma
Information page at NRAO.
Atacama Pathfinder Experiment (APEX)
http://www.apex-telescope.org
Official telescope website.
Atacama Submillimeter Telescope Experiment
http://www.das.uchile.cl/astechile/ASTEinicio.html
Official telescope website.
Aurora
http://www.esa.int/SPECIALS/Aurora/index.html
ESA mission website.
Australian Astronomical Observatory
http://www.aao.gov.au
Official observatory website.
Australian Square Kilometre Array Pathfinder (ASKAP)
http://www.atnf.csiro.au/projects/askap
Official telescope website.
Australia Telescope National Facility
http://www.atnf.csiro.au
Official telescope website.
Bennett, Comet
http://cometography.com/lcomets/1969y1.html
Information page at Cometography website.
BepiColombo
http://sci.esa.int/bepicolombo
ESA mission website.
Bepposax
http://www.asdc.asi.it/bepposax
Official mission website.
Biela, comet
http://cometography.com/pcomets/003d.html
Information page at Cometography website.
Big Bear Solar Observatory
http://www.bbso.njit.edu
Official observatory website.
Birmingham Solar Oscillations network
http://bison.ph.bham.ac.uk/index.php?page=bison,background
Official BISON website.
Bonner Durchmusterung
http://cdsarc.u-strasbg.fr/viz-bin/Cat?I/122
Detailed description and full catalogue downloadable from the CDS.
Boss General Catalogue
http://cdsarc.u-strasbg.fr/viz-bin/Cat?I/113A
Detailed description and full catalogue downloadable from the CDS.
Bright Star Catalogue
http://cdsarc.u-strasbg.fr/viz-bin/Cat?V/50
Detailed description and full catalogue downloadable from the CDS.
http://cdsarc.u-strasbg.fr/viz-bin/Cat?V/36B
Catalogue supplement, downloadable from the CDS.
British Astronomical Association
http://www.britastro.org/baa
Official BAA website.
Butterfly diagram
http://solarscience.msfc.nasa.gov/images/bfly.gif
Regularly updated version of the diagram from NASA's Marshall Space Flight Center.
Byurakan Astrophysical Observatory
http://www.bao.am
Official observatory website.
Calar Alto Observatory
http://www.caha.es
Official observatory website.
Caltech Submillimeter Obs
http://cso.caltech.edu/
Official telescope website.
Cambridge Optical Aperture Synthesis Telescope
http://www.mrao.cam.ac.uk/telescopes/coast
Official telescope website.
Canada-France-Hawaii Telescope
http://www.cfht.hawaii.edu
Official telescope website.
Cape Photographic Durchmusterung
http://cdsarc.u-strasbg.fr/viz-bin/Cat?I/108
Detailed description and full catalogue downloadable from the CDS.
Carnegie Observatories
http://obs.carnegiescience.edu
Official observatory website.
Cassini-Huygens
http://saturn.jpl.nasa.gov/home/index.cfm
Official mission website.
http://www.esa.int/Our_Activities/Space_Science/Cassini-Huygens
ESA mission website.
Catalina Sky Survey
http://www.lpl.arizona.edu/css
Official project website.
Central Bureau for Astronomical Telegrams
http://www.cbat.eps.harvard.edu/index.html
Official website.
Centre de Donnees astronomiques de Strasbourg
http://cdsweb.u-strasbg.fr
Official website with searchable content.
Cerro Chajnantor Atacama Telescope
http://www.ccatobservatory.org/index.cfm
Official telescope website.
Cerro Tololo Inter-American Observatory
http://www.ctio.noao.edu
Official observatory website.
Chandra X-ray Observatory
http://chandra.harvard.edu
Official mission website.
Chandrayaan-1
http://www.isro.org/satellites/chandrayaan-1.aspx
Official mission website.
CHARA array
http://www.chara.gsu.edu/CHARA
Official telescope website.
Chiron
http://cometography.com/pcomets/095p.html
Information page at Cometography website.
Clementine
http://www.nrl.navy.mil/clementine2
Official mission website.
Cluster
http://sci.esa.int/cluster
ESA mission website.
Combined Array for Research in Millimeter-wave Astronomy
http://www.mmarray.org
Official telescope website.
Compton Gamma-Ray Observatory
http://cossc.gsfc.nasa.gov/docs/cgro
Official mission website.
constellations
http://www.iau.org/public/themes/constellations/
International Astronomical Union official page on the constellations.
http://www.iau.org/public/themes/constellations/
History and mythology of the constellations.
Copernicus satellite
http://heasarc.gsfc.nasa.gov/docs/copernicus/copernicus.html
Information page at Goddard Space Flight Center.
Cordoba Durchmusterung
http://cdsarc.u-strasbg.fr/viz-bin/Cat?I/114
Detailed description and full catalogue downloadable from the CDS.
COROT
http://sci.esa.int/science-e/www/area/index.cfm?fareaid=39
ESA mission website.
http://smsc.cnes.fr/COROT
Official mission website.
COS-B
http://sci.esa.int/cos-b/31447-summary/
ESA mission website.
Cosmic Background Explorer
http://lambda.gsfc.nasa.gov/product/cobe
Official mission website.
COSPAR
https://www.cospar-assembly.org/
Official website.
Curiosity
http://www.nasa.gov/mission_pages/msl/index.html
Official mission website.
David Dunlap Observatory
http://www.theddo.ca
Official observatory website.
Dawn
http://dawn.jpl.nasa.gov
Official mission website.
Deep Impact
http://deepimpact.umd.edu
Official mission website.
Deep Space Network
http://deepspace.jpl.nasa.gov/dsn
Official website.
Deep Space 1
http://nmp.jpl.nasa.gov/ds1
Official mission website.
Discovery Channel Telescope
http://www.lowell.edu/dct.php
Official telescope website.
Discovery program
http://discovery.nasa.gov
Official Discovery program website.
Dominion Astrophysical Observatory
http://archive.nrc-cnrc.gc.ca/eng/facilities/hia/astrophysic...
Official observatory website.
Dominion Radio Astrophysical Observatory
http://archive.nrc-cnrc.gc.ca/eng/facilities/hia/radio-astro...
Official observatory website.
Double Star
http://sci.esa.int/double-star/
ESA mission website.
eclipses
http://eclipse.gsfc.nasa.gov/eclipse.html
NASA eclipse website.
Effelsberg Radio Observatory
http://www.mpifr-bonn.mpg.de/8964/effelsberg
Official observatory website.
Einstein Observatory
http://heasarc.gsfc.nasa.gov/docs/einstein/heao2.html
Information page at Goddard Space Flight Center.
Encke, comet
http://cometography.com/pcomets/002p.html
Information page at Cometography website.
EPOXI
http://epoxi.umd.edu
Official mission website.
European Extremely Large Telescope
http://www.eso.org/public/teles-instr/e-elt.html
Official telescope website.
European Northern Observatory
http://www.iac.es/eno.php?lang=en
Official observatory website.
European Southern Observatory
http://www.eso.org
Official observatory website.
European Space Agency
http://www.esa.int
Official ESA website.
European VLBI Network
http://www.evlbi.org
Official EVLBI website.
ExoMars
http://exploration.esa.int/mars/46048-programme-overview/
ESA mission website.
Exosat
http://sci.esa.int/exosat/31189-summary/
ESA mission website.
Explorer
http://explorers.gsfc.nasa.gov
Official Explorer program website.
extrasolar planet
http://exoplanet.eu
Extrasolar planets encyclopedia, regularly updated
http://planetquest.jpl.nasa.gov
NASA website on exoplanets, regularly updated.
Extreme Ultraviolet Explorer
http://heasarc.gsfc.nasa.gov/docs/euve/euve.html
Information page at Goddard Space Flight Center.
Far Ultraviolet Spectroscopic Explorer
http://fuse.pha.jhu.edu
Official mission website.
Fast Auroral Snapshot Explorer
http://sprg.ssl.berkeley.edu/fast
Official mission website.
Faulkes Telescopes
http://faulkes-telescope.com
Official telescopes website.
Fermi Gamma-ray Space Telescope
http://fermi.gsfc.nasa.gov
Official mission website.
http://www.nasa.gov/mission_pages/GLAST/spacecraft/index.html
NASA mission page.
FK
http://cdsarc.u-strasbg.fr/viz-bin/Cat?cat=I%2F264
Detailed description and full catalogue downloadable from the CDS.
Fred Lawrence Whipple Observatory
http://linmax.sao.arizona.edu/help/FLWO/whipple.html
Official observatory website.
Gaia
http://sci.esa.int/gaia/
ESA mission website.
Galaxy
http://www.nasa.gov/mission_pages/spitzer/news/spitzer-20080...
New view of the structure of the Galaxy from the Spitzer Space Telescope.
Galaxy Evolution Explorer
http://www.galex.caltech.edu
Official mission website.
Galileo mission
http://solarsystem.nasa.gov/galileo/
Official mission website.
Gemini Observatory
http://www.gemini.edu/about
Official observatory website.
General Catalogue of Variable Stars
http://www.sai.msu.su/gcvs/gcvs
Official catalogue website with downloadable data, regularly updated.
Genesis
http://genesismission.jpl.nasa.gov
Official mission website.
Giacobini-Zinner, comet
http://cometography.com/pcomets/021p.html
Information page at Cometography website.
Giant Magellan Telescope
http://www.gmto.org
Official telescope website.
Giant Metrewave Radio Telescope
http://www.gmrt.ncra.tifr.res.in
Official telescope website.
Ginga
http://heasarc.gsfc.nasa.gov/docs/ginga/ginga.html
Information page at Goddard Space Flight Center.
Giotto
http://sci.esa.int/giotto/31716-summary/
ESA mission website.
Global Oscillation Network Group
http://gong.nso.edu
Official GONG website.
globular cluster
http://www.physics.mcmaster.ca/~harris/mwgc.dat
Database of known globular clusters.
Goddard Space Flight Center
http://www.nasa.gov/centers/goddard/home/index.html
Official website.
GRANAT
http://heasarc.gsfc.nasa.gov/docs/granat/granat.html
Information page at Goddard Space Flight Center.
Gran Telescopio Canarias
http://www.gtc.iac.es/
Official telescope website.
Gravity and Extreme Magnetism Explorer (GEMS)
http://science1.nasa.gov/missions/gems/
Mission page at Goddard Space Flight Center.
Gravity Probe B
http://einstein.stanford.edu
Official mission website.
Gravity Recovery and Interior Laboratory (GRAIL)
http://moon.mit.edu
Official mission website.
Great September comet
http://cometography.com/lcomets/1882r1.html
Information page at Cometography website.
Green Bank Telescope
https://science.nrao.edu/facilities/gbt
Official telescope website.
Grigg-Skjellerup, comet
http://cometography.com/pcomets/026p.html
Information page at Cometography website.
Hakucho
http://heasarc.gsfc.nasa.gov/docs/hakucho/hakucho.html
Information page at Goddard Space Flight Center.
Hale-Bopp, comet
http://cometography.com/lcomets/1995o1.html
Information page at Cometography website.
Halley, comet
http://cometography.com/pcomets/001p.html
Information page at Cometography website.
Hartebeesthoek Radio Observatory
http://www.hartrao.ac.za
Official observatory website.
Harvard College Observatory
http://www.cfa.harvard.edu/hco
Official observatory website.
Harvard-Smithsonian Center for Astrophysics
http://www.cfa.harvard.edu/
Official CFA website.
Hat Creek Radio Observatory
http://www.hcro.org
Official observatory website.
Haute Provence Observatory
http://www.obs-hp.fr
Official observatory website.
Hayabusa
http://www.isas.jaxa.jp/e/enterp/missions/hayabusa/index.shtml
Official mission website.
Haystack Observatory
http://www.haystack.mit.edu
Official observatory website.
Henry Draper Catalogue
http://cdsarc.u-strasbg.fr/viz-bin/Cat?cat=III/135
Detailed description and full catalogue downloadable from the CDS.
Herschel-Rigollet, comet
http://cometography.com/pcomets/035p.html
Information page at Cometography website.
Herschel Space Observatory
http://sci.esa.int/herschel
ESA mission website.
High Energy Astrophysical Observatory
http://heasarc.gsfc.nasa.gov/docs/heao1/heao1.html
Information page on HEAO 1 at Goddard Space Flight Center.
http://heasarc.gsfc.nasa.gov/docs/einstein/heao2.html
Information page on HEAO 2 at Goddard Space Flight Center.
http://heasarc.gsfc.nasa.gov/docs/heao3/heao3.html
Information page on HEAO 3 at Goddard Space Flight Center.
High-Energy Transient Explorer
http://heasarc.gsfc.nasa.gov/docs/hete2
Mission page at Goddard Space Flight Center.
Hinode
http://hinode.nao.ac.jp/index_e.shtml
Hinode science centre website.
http://www.isas.jaxa.jp/e/enterp/missions/hinode/index.shtml
Mission website at Japan Aerospace Exploration Agency.
Hipparcos
http://sci.esa.int/hipparcos
ESA mission website.
Hipparcos Catalogue
http://cdsarc.u-strasbg.fr/viz-bin/Cat?I/239
Detailed description and full catalogue downloadable from the CDS.
http://cdsarc.u-strasbg.fr/viz-bin/Cat?I/311
New reduction of the Hipparcos catalogue, downloadable from the CDS.
Hobby Eberly Telescope
http://www.as.utexas.edu/mcdonald/het/het.html
Official telescope website.
Hubble Space Telescope
http://www.nasa.gov/mission_pages/hubble/main/index.html
Official mission website.
Huygens probe
http://www.esa.int/Our_Activities/Space_Science/Cassini-Huygens
ESA mission website.
Hyakutake, Comet
http://cometography.com/lcomets/1996b2.html
Information page at Cometography website.
Ikeya-Seki
http://cometography.com/lcomets/1965s1.html
Information page at Cometography website.
Ikeya-Zhang
http://cometography.com/pcomets/153p.html
Information page at Cometography website.
Imager for Magnetopause to Aurora Global Exploration
http://image.gsfc.nasa.gov
Official mission website.
Index Catalogue
http://cdsarc.u-strasbg.fr/viz-bin/Cat?VII/118
Detailed description and full catalogue downloadable from the CDS. This link no longer works and we are unable to find a suitable alternative.
http://www.ngcicproject.org/ngciccat.htm
The original catalogue online.
Infrared Astronomical Satellite (IRAS)
http://irsa.ipac.caltech.edu/IRASdocs/iras.html
Mission website at CalTech.
Infrared Space Observatory
http://sci.esa.int/iso/33310-summary/
ESA mission website.
Institut de Radio Astronomie Millimetrique
http://www.iram-institute.org/
Official observatory website.
Interface Region Imaging Spectrograph (IRIS)
http://iris.lmsal.com/index.htm
Official mission website.
International Astronomical Union
http://www.iau.org
Official IAU website.
International Celestial Reference System
http://aa.usno.navy.mil/faq/docs/ICRS_doc.php
Information page at the US Naval Observatory.
International Gamma-Ray Astrophysics Laboratory
http://sci.esa.int/integral/31149-summary/
ESA mission website.
International Liquid Mirror Telescope
http://www.aeos.ulg.ac.be/LMT
Official telescope website.
International Sunspot Number
http://www.sidc.oma.be/index.php
Solar Influences Data Analysis Center.
International Ultraviolet Explorer
http://sci.esa.int/iue/31284-summary/
ESA mission website.
Interstellar Boundary Explorer (IBEX)
http://www.ibex.swri.edu/mission/index.shtml
Official mission website.
Isaac Newton Group
http://www.ing.iac.es
Official observatory website.
James Clerk Maxwell Telescope
http://www.jach.hawaii.edu/JCMT
Official telescope website.
James Webb Space Telescope
http://jwst.gsfc.nasa.gov
Official mission website.
Jet Propulsion Laboratory
http://www.nasa.gov/centers/jpl/home/index.html
Official website.
Jodrell Bank Observatory
http://www.jb.man.ac.uk
Official observatory website.
Johnson Space Center
http://www.nasa.gov/centers/johnson/home/index.html
Official website.
Joint Astronomy Centre
http://www.jach.hawaii.edu
Official JAC website.
Juno -- Jupiter polar orbiter
http://www.nasa.gov/mission_pages/juno/main/index.html
Official mission website.
Kaguya
http://www.jaxa.jp/projects/sat/selene/index_e.html
Official mission website.
http://www.isas.jaxa.jp/e/enterp/missions/kaguya/index.shtml
Mission overview at Japan Aerospace Exploration Agency.
Karoo Array Telescope
http://www.ska.ac.za/meerkat
Official telescope website.
Kennedy Space Center
http://www.nasa.gov/centers/kennedy/home/index.html
Official website.
Kepler
http://kepler.nasa.gov
Official mission website.
Kitt Peak National Observatory
http://www.noao.edu/kpno
Official observatory website.
Kohoutek, comet
http://cometography.com/pcomets/075p.html
Information page at Cometography website.
Large Binocular Telescope
http://www.lbto.org/index.htm
Official telescope website.
Large Millimeter Telescope
http://www.lmtgtm.org
Official telescope website.
Large Synoptic Survey Telescope
http://www.lsst.org
Official telescope website.
Las Campanas Observatory
http://www.lco.cl/lco
Official observatory website.
Laser Interferometer Space Antenna
http://lisa.nasa.gov
Official mission website.
La Silla Observatory
http://www.eso.org/public/teles-instr/lasilla.html
Official observatory website.
http://www.ls.eso.org/index.html
Facilities at La Silla Observatory.
Lexell, comet
http://cometography.com/pcomets/1770l1.html
Information page at Cometography website.
Lick Observatory
http://mthamilton.ucolick.org
Official observatory website.
Lincoln Near-Earth Asteroid Research
http://www.ll.mit.edu/mission/space/linear
Official project website.
LISA Pathfinder
http://sci.esa.int/lisa-pathfinder/
ESA mission website.
Liverpool Telescope
http://telescope.livjm.ac.uk
Official telescope website.
Long Wavelength Array (LWA)
http://lwa.phys.unm.edu/index.html
Official telescope website.
lookback time
http://www.astro.ucla.edu/~wright/CosmoCalc.html
Online calculator for converting redshift to lookback time and other parameters.
Lowell Observatory
http://www.lowell.edu
Official observatory website.
Lowell Observatory Near Earth Object Search
http://www.lowell.edu/rsch/programs.php?p=bowell
Official project website.
Low Frequency Array
http://www.lofar.org
Official telescope website.
Lunar Atmosphere and Dust Environment Explorer (LADEE)
http://www.nasa.gov/mission_pages/LADEE/main/
NASA information page.
lunar eclipse
http://www.mreclipse.com/Special/LEprimer.html
Lunar eclipse predictions, reports, and information.
Lunar Prospector
http://nssdc.gsfc.nasa.gov/nmc/spacecraftDisplay.do?id=1998-...
NASA information page.
Lunar Reconnaissance Orbiter
http://lro.gsfc.nasa.gov
Official mission website.
Magdalena Ridge Observatory
http://www.mro.nmt.edu
Official observatory website.
Magellan
http://nssdc.gsfc.nasa.gov/nmc/spacecraftDisplay.do?id=1989-...
NASA information page.
http://www2.jpl.nasa.gov/magellan
Mission website at JPL.
Magellan Telescopes
http://obs.carnegiescience.edu/Magellan
Official telescope website.
http://www.lco.cl/telescopes-information/magellan
Information page at Las Campanas Observatory.
Magnetospheric Multiscale Mission (MMS)
http://mms.space.swri.edu
Official mission website.
http://mms.gsfc.nasa.gov/
Mission website at Goddard Space Flight Center.
Major Atmospheric Gamma-ray Imaging Cherenkov telescopes
https://wwwmagic.mpp.mpg.de/
Official telescopes website.
Mars Atmosphere and Volatile Evolution
http://www.nasa.gov/mission_pages/maven/main/index.html
Official mission website.
http://lasp.colorado.edu/maven
Mission page at University of Colorado.
Mars Exploration Rover
http://marsrovers.jpl.nasa.gov/home/index.html
Official mission website.
Mars Express
http://sci.esa.int/mars-express/
http://www.esa.int/Our_Activities/Space_Science/Mars_Express
ESA mission website.
Mars Global Surveyor
http://mars.jpl.nasa.gov/mgs
Official mission website.
Marshall Space Flight Center
http://www.nasa.gov/centers/marshall/home/index.html
Official website.
Mars Odyssey
http://mars.jpl.nasa.gov/odyssey
Official mission website.
Mars Pathfinder
http://mars.jpl.nasa.gov/MPF/index1.html
Official mission website.
Mars Reconnaissance Orbiter
http://mars.jpl.nasa.gov/mro
Official mission website.
Mars Science Laboratory
http://mars.jpl.nasa.gov/msl
Official mission website.
Mauna Kea Observatories
http://www.ifa.hawaii.edu/mko
Official observatory website.
McDonald Observatory
http://www.as.utexas.edu/mcdonald/mcdonald.html
Official observatory website.
Mcnaught, comet
http://cometography.com/lcomets/2006p1.html
Information page at Cometography website.
MDM Observatory
http://www.astro.lsa.umich.edu/obs/mdm
Official observatory website.
Mercury Surface, Space Environment, Geochemistry and Ranging
http://messenger.jhuapl.edu
Official mission website.
http://www.nasa.gov/mission_pages/messenger/main
Mission page at NASA.
Meteor Crater
http://www.meteorcrater.com
Meteor Crater Visitor Center and information website.
meteorite
http://www.metbase.de/home.html
Meteorite information database.
Microvariabiity and Oscillations of Stars
http://www.asc-csa.gc.ca/eng/satellites/most/default.asp
Mission page at Canadian Space Agency.
http://most.astro.ubc.ca/
Official mission website.
Midcourse Space Experiment
http://sd-www.jhuapl.edu/MSX
Official mission website.
Minor Planet Center
http://minorplanetcenter.org/iau/mpc.html
Official website, with links to many information pages on minor planets.
MMT Observatory
http://www.mmto.org
Official observatory website.
Molonglo Radio Observatory
http://www.physics.usyd.edu.au/sifa/Main/MOST
Official observatory website.
Monitoring Network of Telescopes
http://monet.uni-goettingen.de
Official MONET website.
Monthly Notices of the Royal Astronomical Society
https://academic.oup.com/mnras
Official website with contents and abstracts of recent issues and free online access to older issues.
Mopra Observatory
http://www.narrabri.atnf.csiro.au/mopra
Official observatory website.
Mount Graham International Observatory
http://mgpc3.as.arizona.edu
Official observatory website.
Mount Stromlo and Siding Spring Observatories
http://rsaa.anu.edu.au/observatories
Official observatory website.
Mount Wilson Observatory
http://www.mtwilson.edu
Official observatory website.
Mullard Radio Astronomy Observatory
http://www.mrao.cam.ac.uk/outreach/
Official observatory website.
Multi-Element Radio-Linked Interferometer Network
http://www.e-merlin.ac.uk
Official MERLIN website.
Murchison Radio Astronomy Observatory
http://www.atnf.csiro.au/projects/askap/site.html
Official observatory website.
Murchison Widefield Array
http://www.mwatelescope.org
Official telescope website.
Nancay Radio Astronomy Observatory
http://www.obs-nancay.fr
Official observatory website.
NASA Infrared Telescope Facility
http://irtfweb.ifa.hawaii.edu
Official telescope website.
National Aeronautics and Space Administration
http://www.nasa.gov
Official website.
National Optical Astronomy Observatory
http://www.noao.edu
Official NOAO website.
National Radio Astronomy Observatory
http://www.nrao.edu
Official NRAO website.
National Solar Observatory
http://www.nso.edu
Official observatory website.
National Space Science Data Center
http://nssdc.gsfc.nasa.gov
Official website, with links to many information pages on spacecraft and space exploration.
Nautical Almanac
https://www.gov.uk/government/organisations/hm-nautical-alma...
Official website.
NEAR Shoemaker
http://near.jhuapl.edu
Official mission website.
New Frontiers program
http://discoverynewfrontiers.nasa.gov/index.cfml
Official New Frontiers program website.
New General Catalogue
http://cdsarc.u-strasbg.fr/viz-bin/Cat?VII/118
Detailed description and full catalogue downloadable from the CDS. This link no longer works and we are unable to find a suitable alternative.
http://www.ngcicproject.org/ngciccat.htm
The original catalogue online.
New Horizons
http://pluto.jhuapl.edu
Official mission website.
New Millennium Program
http://nmp.nasa.gov
Official New Millennium Program website.
New Technology Telescope
http://www.eso.org/sci/facilities/lasilla/telescopes/ntt/ind...
Official telescope website.
Nobeyama Radio Observatory
http://www.nro.nao.ac.jp/indextop-e.html
Official observatory website.
Nordic Optical Telescope
http://www.not.iac.es
Official telescope website.
NuSTAR
http://www.nustar.caltech.edu
Official mission website.
Observatoire du Mont Megantic
http://omm.craq-astro.ca/index_en.php
Official observatory website.
Onsala Space Observatory
http://www.chalmers.se/rss/oso-en
Official observatory website.
Ootacamund Radio Astronomy Centre
http://rac.ncra.tifr.res.in/
Official telescope website.
open cluster
http://www.astro.iag.usp.br/~wilton
Database of open clusters.
Orbiting Astronomical Observatory
http://nssdc.gsfc.nasa.gov/nmc/spacecraftDisplay.do?id=1968-...
NASA information page for OAO 2.
http://nssdc.gsfc.nasa.gov/nmc/spacecraftDisplay.do?id=1972-...
NASA information page for OAO 3.
Owens Valley Radio Observatory
http://www.ovro.caltech.edu
Official observatory website.
Palomar Observatory
http://www.astro.caltech.edu/palomar
Official observatory website.
Palomar Observatory Sky Survey
http://gsss.stsci.edu/SkySurveys/SkySurveys.htm
Information and data retrieval page.
Pan-STARRS
http://pan-starrs.ifa.hawaii.edu
Official telescope website.
Paranal Observatory
http://www.eso.org/public/teles-instr/vlt.html
Official observatory website.
Paris Observatory
http://www.obspm.fr
Official observatory website.
Parkes Observatory
http://www.parkes.atnf.csiro.au
Official observatory website.
Paul Wild Observatory
http://www.narrabri.atnf.csiro.au
Official observatory website.
Phobos probes
http://nssdc.gsfc.nasa.gov/nmc/spacecraftDisplay.do?id=1988-...
NASA information page for Phobos 1.
http://nssdc.gsfc.nasa.gov/nmc/spacecraftDisplay.do?id=1988-...
NASA information page for Phobos 2.
Phoenix (Mars mission)
http://phoenix.lpl.arizona.edu
Official mission website.
PICARD
http://smsc.cnes.fr/PICARD
Official mission website.
Pic du Midi Observatory
http://www.picdumidi.com/
Official observatory website.
Pioneer 10, 11
http://nssdc.gsfc.nasa.gov/nmc/spacecraftDisplay.do?id=1972-...
NASA information page for Pioneer 10.
http://nssdc.gsfc.nasa.gov/nmc/spacecraftDisplay.do?id=1973-...
NASA information page for Pioneer 11.
Planck
http://sci.esa.int/planck/
ESA mission website.
Potentially Hazardous Asteroid
http://neo.jpl.nasa.gov/neo/groups.html
NASA information page.
PPM star catalogue
http://cdsarc.u-strasbg.fr/viz-bin/Cat?I/146
Detailed description and full catalogue of PPM North downloadable from the CDS.
http://cdsarc.u-strasbg.fr/viz-bin/Cat?I/193
Detailed description and full catalogue of PPM South downloadable from the CDS.
http://cdsarc.u-strasbg.fr/viz-bin/Cat?I/208
Supplement to the PPM Catalogue downloadable from the CDS.
Publications of the Astronomical Society of the Pacific
http://www.journals.uchicago.edu/PASP
Official website with contents and abstracts of recent issues and free online access to older issues.
pulsar
http://www.atnf.csiro.au/research/pulsar/psrcat
Searchable database of all known pulsars, regularly updated.
RadioAstron
http://www.asc.rssi.ru/radioastron/index.html
Official mission website.
Ramaty High-Energy Solar-Spectroscopic Imager
http://hesperia.gsfc.nasa.gov/hessi
Official mission website.
Ranger probes
http://nssdc.gsfc.nasa.gov/planetary/lunar/ranger.html
NASA information page.
RATAN-600
http://www.sao.ru/ratan
Official telescope website.
redshift
http://www.astro.ucla.edu/~wright/CosmoCalc.html
Online calculator for converting redshift to lookback time and other parameters.
ring, planetary
http://planetarynames.wr.usgs.gov/Page/Rings
Names and data of planetary rings.
Roque de los Muchachos Observatory
http://www.iac.es/gabinete/orm/indice.html
Official observatory website.
Rosat
http://heasarc.gsfc.nasa.gov/docs/rosat/rosat.html
Information page at Goddard Space Flight Center.
Rosetta
http://sci.esa.int/rosetta
ESA mission website.
Rossi X-ray Timing Explorer
http://heasarc.gsfc.nasa.gov/docs/xte/rxte.html
Information page at Goddard Space Flight Center.
Royal Astronomical Society
http://www.ras.org.uk
Official website.
Royal Observatory Edinburgh
http://www.roe.ac.uk
Official observatory website.
Sacramento Peak Observatory
http://nsosp.nso.edu
Official observatory website.
Schwassman-Wachmann 1, comet
http://cometography.com/pcomets/029p.html
Information page at Cometography website.
Search for Extraterrestrial Intelligence
http://www.seti.org
Official SETI Institute website.
Shoemaker-Levy, comet
http://cometography.com/pcomets/1993f2.html
Information page at Cometography website.
Siding Spring Observatory
http://rsaa.anu.edu.au/observatories/siding-spring-observatory
Official observatory web page.
SIMBAD
http://simbad.u-strasbg.fr/simbad
Online portal to SIMBAD astronomical database.
Sloan Digital Sky Survey
http://www.sdss.org
Official project website with many images.
Small Astronomy Satellite
http://heasarc.gsfc.nasa.gov/docs/uhuru/uhuru.html
Information page on SAS 1 at Goddard Space Flight Center.
http://heasarc.gsfc.nasa.gov/docs/sas2/sas2.html
Information page on SAS 2 at Goddard Space Flight Center.
http://heasarc.gsfc.nasa.gov/docs/sas3/sas3.html
Information page on SAS 3 at Goddard Space Flight Center.
SMART-1
http://sci.esa.int/smart-1/31407-summary/
ESA mission website.
Smithsonian Astrophysical Observatory
http://www.cfa.harvard.edu/sao/index.html
Official observatory website.
Smithsonian Astrophysical Observatory Star Catalogue
http://cdsarc.u-strasbg.fr/viz-bin/Cat?I/131A
Detailed description and full catalogue downloadable from the CDS.
Solar and Heliospheric Observatory
http://sohowww.nascom.nasa.gov
Official mission website.
Solar Dynamics Observatory
http://sdo.gsfc.nasa.gov
Official mission website.
solar eclipse
http://www.mreclipse.com/Special/SEprimer.html
Solar eclipse predictions, reports, and information.
Solar Orbiter
http://sci.esa.int/solarorbiter
Official mission website.
Solar Terrestrial Relations Observatory
http://stereo.gsfc.nasa.gov
Official mission website.
http://www.nasa.gov/mission_pages/stereo/main
Mission page at NASA.
South African Astronomical Observatory
http://www.saao.ac.za
Official observatory website.
Southern African Large Telescope
http://www.salt.ac.za
Official telescope website.
Southern Astrophysical Research Telescope
http://www.soartelescope.org
Official telescope website.
Southern Reference stars
http://cdsarc.u-strasbg.fr/viz-bin/Cat?I/138
Detailed description and full catalogue downloadable from the CDS.
South Pole Telescope (SPT)
http://pole.uchicago.edu
Official telescope website.
Space Telescope Science Institute
http://www.stsci.edu
Official website.
Spacewatch
http://spacewatch.lpl.arizona.edu
Official project website.
space weather
http://www.esa-spaceweather.net/spweather/BACKGROUND/index.html
Space weather information at ESA.
http://www.swpc.noaa.gov
Space Weather Prediction Center.
Special Astrophysical Observatory
http://www.sao.ru/Doc-en
Official observatory website.
Spectrum-Roentgen-Gamma
http://hea.iki.rssi.ru/SRG/en/index.php
Official mission website.
Spitzer Space Telescope
http://www.spitzer.caltech.edu
Official mission website.
Square Kilometre Array
http://www.skatelescope.org
Official telescope website.
Stardust
http://stardust.jpl.nasa.gov
Official Stardust website.
http://stardustnext.jpl.nasa.gov
Stardust-NEXT website.
Steward Observatory
http://www.as.arizona.edu
Official observatory website.
Stratospheric Observatory for Infrared Astronomy
http://www.sofia.usra.edu
Official telescope website.
Subaru Telescope
http://www.subarutelescope.org
Official telescope website.
Submillimeter Array
http://www.cfa.harvard.edu/sma
Official telescope website.
Submillimeter Wave Astronomy Satellite
http://www.cfa.harvard.edu/swas
Official mission website.
supernova
http://www.cbat.eps.harvard.edu/lists/Supernovae.html
Database of all known supernovae, regularly updated.
Suzaku
http://www.isas.jaxa.jp/e/enterp/missions/suzaku/index.shtml
Official mission website.
http://heasarc.gsfc.nasa.gov/docs/astroe/astroe2.html
Information page at Goddard Space Flight Center.
Swift
http://swift.gsfc.nasa.gov/docs/swift/swiftsc.html
Official mission website.
http://heasarc.gsfc.nasa.gov/docs/swift/swift.html
Information page at Goddard Space Flight Center.
Swift-Tuttle, comet
http://cometography.com/pcomets/109p.html
Information page at Cometography website.
Tebbut, comet
http://cometography.com/lcomets/1861j1.html
Information page at Cometography website.
Teide Observatory
http://www.iac.es/ot/indice.html
Official observatory website.
Telescopio Nazionale Galileo
http://www.tng.iac.es
Official telescope website.
Tempel-Tuttle, comet
http://cometography.com/pcomets/055p.html
Information page at Cometography website.
Tenma
http://heasarc.gsfc.nasa.gov/docs/tenma/tenma.html
Information page at Goddard Space Flight Center.
Thirty Meter Telescope
http://www.tmt.org
Official telescope website.
time zone
http://astro.ukho.gov.uk/nao/miscellanea/WMTZ/
Map of current time zones at HM Nautical Almanac Office.
transit
http://eclipse.gsfc.nasa.gov/transit/transit.html
NASA transits website.
Transition Region and Coronal Explorer
http://trace.lmsal.com
Official mission website.
Trojan asteroid
http://www.minorplanetcenter.net/iau/lists/Trojans.html
Database of trojan minor planets.
Tubitak National Observatory
http://www.tug.tubitak.gov.tr/tug_summary.htm
Official observatory website.
http://hea.iki.rssi.ru/rtt150/en/index.php
Information page on RTT150 telescope.
Tuttle-Giacobini-Kresak, comet
http://cometography.com/pcomets/041p.html
Information page at Cometography website.
Two Micron All Sky Survey
http://www.ipac.caltech.edu/2mass
Official project website with numerous images.
Tycho Catalogue
http://cdsarc.u-strasbg.fr/viz-bin/Cat?I/259
Detailed description and full catalogue downloadable from the CDS.
Uhuru
http://heasarc.gsfc.nasa.gov/docs/uhuru/uhuru.html
Information page at Goddard Space Flight Center.
UKIRT Infrared Deep-Sky Survey
http://www.ukidss.org
Official project website.
Ulysses
http://sci.esa.int/ulysses
ESA mission website.
United Kingdom Infrared Telescope
http://www.jach.hawaii.edu/UKIRT
Official telescope website.
United Kingdom Schmidt Telescope
http://www.aao.gov.au/AAO/ukst
Official telescope website.
Uranometria
http://lhldigital.lindahall.org/u?/astro_atlas,0
Scans of the original atlas.
US Naval Observatory
http://www.usno.navy.mil/USNO
Official observatory website.
USNO CCD Astrographic Catalogue
http://www.usno.navy.mil/USNO/astrometry/optical-IR-prod/ucac
Official catalogue web page.
Vatican Advanced Technology Telescope
http://www.vaticanobservatory.org/VATT/index.php
Official telescope website.
Venus Express
http://sci.esa.int/venus-express/
ESA mission website.
Very Energetic Radiation Imaging Telescope Array System
http://veritas.sao.arizona.edu
Official telescope website.
Very Large Array
http://www.vla.nrao.edu
Official telescope website.
Very Large Telescope
http://www.eso.org/public/teles-instr/vlt.html
Official telescope website.
Very Long Baseline Array
http://www.vlba.nrao.edu
Official VBA website.
Very Small Array
http://www.mrao.cam.ac.uk/outreach/radio-telescopes/vsa/
Official telescope website.
Virtual Observatory
http://www.ivoa.net
International Virtual Observatory Alliance website.
http://www.euro-vo.org/
European Virtual Observatory website.
Visible and Infrared Survey Telescope for Astronomy
http://www.eso.org/public/teles-instr/surveytelescopes/vista...
Official telescope website.
Voyager
http://voyager.jpl.nasa.gov
Official mission website.
Washington Double Star Catalogue
http://ad.usno.navy.mil/wds
Full catalogue online, updated nightly.
West, comet
http://cometography.com/lcomets/1975v1.html
Information page at Cometography website.
Westerbork Synthesis Radio Telescope
http://www.astron.nl/radio-observatory/public/public-0
Official telescope website.
Wide Field Infrared Survey Explorer
http://wise.ssl.berkeley.edu
Official mission website.
Wilkinson Microwave Anisotropy Probe
http://wmap.gsfc.nasa.gov
Official mission website.
William Herschel Telescope
http://www.ing.iac.es/Astronomy/telescopes/wht
Official telescope website.
Wilson-Harrington, comet
http://cometography.com/pcomets/107p.html
Information page at Cometography website.
Wind
http://www-istp.gsfc.nasa.gov/wind.shtml
Official mission website.
http://science.nasa.gov/missions/wind/
Mission page at NASA.
WIYN Telescope
http://www.noao.edu/wiyn
Official telescope website.
W.M. Keck Observatory
http://www.keckobservatory.org
Official observatory website.
Wyoming Infrared Observatory
http://physics.uwyo.edu/~chip/wiro/wiro.html
Official observatory website.
Xinglong Observatory
http://www.bao.ac.cn/
Official observatory website.
XMM-Newton
http://sci.esa.int/xmm-newton/31249-summary/
ESA mission website.
Yerkes Observatory
http://astro.uchicago.edu/yerkes
Official observatory website.
Yohkoh
http://www.isas.jaxa.jp/e/enterp/missions/yohkoh/index.shtml
Mission page at Japan Aerospace Exploration Agency.
Zwicky galaxy catalogue
http://cdsarc.u-strasbg.fr/viz-bin/Cat?VII/190
Detailed description and full catalogue downloadable from the CDS.
http://cdsarc.u-strasbg.fr/ftp/cats/J/PASP/111/438/ReadMe
Updated Zwicky Catalogue downloadable from the CDS.
Illustrations
Here is a list of links to over 100 illustrations, arranged alphabetically by the relevant dictionary entries:
A B C D E F G H I J K L M N O P Q R S T U V W
Andromeda Galaxy
http://www.esa.int/esaCP/SEMY1K0SDIG_index_1.html
Antennae galaxies
http://hubblesite.org/newscenter/archive/releases/2006/46/im...
apogee
http://solarsystem.nasa.gov/multimedia/display.cfm?IM_ID=442
asteroid belt
http://solarsystem.nasa.gov/galleries/the-asteroid-belt
Atacama Large Millimetre Array
http://www.eso.org/public/images/alma-chajnantor-scene1/
aurora
http://earthobservatory.nasa.gov/IOTD/view.php?id=44348&src=fb
barred spiral galaxy
http://hubblesite.org/newscenter/archive/releases/2005/01/im...
Betelgeuse
http://hubblesite.org/newscenter/archive/releases/star/massi...
Black Eye galaxy
http://hubblesite.org/newscenter/archive/releases/2004/04/im...
butterfly diagram
http://solarscience.msfc.nasa.gov/images/bfly.gif
caldera
http://www.esa.int/esa-mmg/mmg.pl?b=b&type=I&mission=Mars%20...
Cassiopeia A
http://www.spitzer.caltech.edu/images/1445-ssc2005-14c-Cassi...
Cat's Eye Nebula
http://hubblesite.org/newscenter/archive/releases/2004/27/im...
Centaurus A
http://www.eso.org/public/images/cena/
Coalsack Nebula
http://www.eso.org/public/images/b06/
comet
http://www.eso.org/public/images/phot-mar14-hbs-2/
corona, solar
http://www.eso.org/public/images/eso0127a/
coronal hole
http://sdo.gsfc.nasa.gov/gallery/potw/item/272
coronal mass ejection
http://earthobservatory.nasa.gov/IOTD/view.php?id=44362
cosmic microwave background
http://map.gsfc.nasa.gov/media/101080/index.html
Crab Nebula
http://hubblesite.org/newscenter/archive/releases/2005/37/im...
Cygnus X-1
https://www.spacetelescope.org/images/cygx1_illust_orig/
Dione
http://photojournal.jpl.nasa.gov/catalog/PIA08256
Dumbbell Nebula
http://www.eso.org/public/images/eso9846a/
Eagle Nebula
http://www.eso.org/public/images/eso0926a/
Earth
http://earthobservatory.nasa.gov/Features/BlueMarble/BlueMar...
Eros
http://photojournal.jpl.nasa.gov/catalog/PIA02475
Eskimo Nebula
http://hubblesite.org/newscenter/archive/releases/2000/07/im...
Eta Carinae
http://www.eso.org/public/images/eso0817a/
or
http://hubblesite.org/newscenter/archive/releases/2009/25/im...
Europa
http://photojournal.jpl.nasa.gov/catalog/PIA03002
extrasolar planet
http://www.gemini.edu/gallery/v/astronomical_images_and_illu...
Fornax cluster
http://www.eso.org/public/images/eso0949g/
galactic centre
http://www.spitzer.caltech.edu/images/1540-ssc2006-02a-A-Cau...
Galaxy
http://www.nasa.gov/mission_pages/spitzer/multimedia/2008060...
Galilean satellites
http://photojournal.jpl.nasa.gov/catalog/PIA00601
Gaspra
http://photojournal.jpl.nasa.gov/catalog/PIA00118
Gemini Observatory
http://www.gemini.edu/gallery/media/moonlit-giant
globular cluster
http://hubblesite.org/image/2434/news_release/2008-40
globule
http://hubblesite.org/newscenter/archive/releases/2007/16/im...
Gran Telescopio Canarias
http://www.gtcdigital.net/imagenes.php?op1=6&op2=4&gal=9&img...
gravitational lens
http://hubblesite.org/newscenter/archive/releases/2000/07/im...
Great Red spot
http://hubblesite.org/newscenter/archive/releases/2008/42/im...
Hadley Rille
http://apollo.sese.asu.edu/LIW/20071114.html
or
http://commons.wikimedia.org/wiki/File:Apollo_15_Hadley_Rill...
Helix Nebula
http://www.eso.org/public/images/eso0907a/
Hobby-Eberly Telescope (1)
https://mcdonaldobservatory.org/news/gallery/het-dome-dusk
Hobby-Eberly Telescope (2)
https://mcdonaldobservatory.org/news/gallery/het-mirror-through-dome
or
http://mcdonaldobservatory.org/news/gallery/image.php?id=121
Horsehead Nebula
http://www.eso.org/public/images/eso0202a/
Hubble Space Telescope
http://spaceflight.nasa.gov/gallery/images/shuttle/sts-125/h...
Iapetus
http://photojournal.jpl.nasa.gov/catalog/PIA11690
Ida
http://photojournal.jpl.nasa.gov/catalog/PIA00069
Io
http://photojournal.jpl.nasa.gov/catalog/PIA01667
James Webb Space Telescope
http://ngst.gsfc.nasa.gov/images_artist13532.html
Jewel Box cluster
http://www.eso.org/public/images/eso0940a/
or
http://www.eso.org/public/images/eso0940b/
Jupiter
http://photojournal.jpl.nasa.gov/catalog/PIA02873
Kuiper Belt
http://solarsystem.nasa.gov/multimedia/display.cfm?IM_ID=10195
Lagoon Nebula
http://www.eso.org/public/images/eso0936a/
Large Binocular Telescope
https://www.jpl.nasa.gov/missions/large-binocular-telescope-interferometer-lbti/
Large Magellanic Cloud
http://www.eso.org/public/images/lmc-schmidt-1986-6000p/
light pollution
http://photojournal.jpl.nasa.gov/catalog/PIA02991
Lunar Reconnaissance Orbiter photographs the Apollo 11 landing site
http://lroc.sese.asu.edu/news/index.php?/archives/135-High-N...
Maffei Galaxies
http://www.spitzer.caltech.edu/images/3463-sig10-025-Maffei-...
Mars
http://hubblesite.org/newscenter/archive/releases/2003/22/im...
McNaught, comet
https://www.eso.org/public/images/mc_naught34/
http://www.eso.org/public/images/mc_naught40/
Mercury
http://photojournal.jpl.nasa.gov/catalog/PIA11245
and
http://photojournal.jpl.nasa.gov/catalog/PIA12313
Milky Way
http://www.eso.org/public/images/eso0932a/
Mimas
http://photojournal.jpl.nasa.gov/catalog/PIA12570
Moon
http://photojournal.jpl.nasa.gov/catalog/PIA00302
nearside
http://photojournal.jpl.nasa.gov/catalog/PIA00304
farside
nebula
http://hubblesite.org/news_release/news/2015-01/3-nebulae
Neptune
http://photojournal.jpl.nasa.gov/catalog/PIA01492
nucleus, cometary
http://photojournal.jpl.nasa.gov/catalog/PIA13629
Olympus Mons
http://www.esa.int/esa-mmg/mmg.pl?b=b&type=I&mission=Mars%20...
Omega Centauri
http://www.eso.org/public/images/eso0844a/
Oort Cloud
http://solarsystem.nasa.gov/multimedia/display.cfm?IM_ID=10195
Opportunity
http://photojournal.jpl.nasa.gov/catalog/PIA13669
Orientale Basin
http://photojournal.jpl.nasa.gov/catalog/PIA13225
Orion Nebula
http://hubblesite.org/newscenter/archive/releases/2006/01/im...
palimpsest
http://photojournal.jpl.nasa.gov/catalog/PIA01659
perigee
http://solarsystem.nasa.gov/multimedia/display.cfm?IM_ID=442
Phobos
http://www.esa.int/esa-mmg/mmg.pl?b=b&type=I&mission=Mars%20...
planetary nebula
http://hubblesite.org/newscenter/archive/releases/nebula/pla...
or
http://hubblesite.org/newscenter/archive/releases/nebula/pla...
Pleiades
http://hubblesite.org/newscenter/archive/releases/2004/20/im...
Pluto
http://hubblesite.org/newscenter/archive/releases/2010/06/im...
Polaris
http://hubblesite.org/newscenter/archive/releases/2006/02/im...
prominence
http://sohowww.nascom.nasa.gov/pickoftheweek/old/03sep2010/
quasar
http://www.eso.org/public/images/eso0529a/
radar astronomy
http://www.jpl.nasa.gov/news/news.cfm?release=2011-011
Rhea
http://photojournal.jpl.nasa.gov/catalog/PIA11458
ring galaxy
http://hubblesite.org/newscenter/archive/releases/2007/17/im...
Ring Nebula
http://hubblesite.org/newscenter/archive/releases/1999/01/im...
Sagittarius A
http://chandra.harvard.edu/photo/2010/sgra/
Saturn
http://hubblesite.org/newscenter/archive/releases/solar%20sy...
Seyfert galaxy
http://hubblesite.org/newscenter/archive/releases/1998/28/im...
Shoemaker-Levy 9, Comet
http://hubblesite.org/newscenter/archive/releases/solar-syst...
Sombrero galaxy
http://www.eso.org/public/images/sombrero/
South Pole-Aitken Basin
http://www.lpi.usra.edu/publications/slidesets/clem2nd/slide...
spiral galaxy
http://www.eso.org/public/images/eso1042a/
Spirit
http://photojournal.jpl.nasa.gov/catalog/PIA12203
starburst galaxy
http://hubblesite.org/newscenter/archive/releases/2006/14/
Stardust
http://www.nasa.gov/mission_pages/stardust/multimedia/pia021...
Stephan's Quintet
http://www.gemini.edu/gallery/v/astronomical_images_and_illu...
sungrazer
http://sohowww.nascom.nasa.gov/pickoftheweek/old/22oct2010/
sunspot
http://sohowww.nascom.nasa.gov/gallery/images/spotcollage.html
or
http://sohowww.nascom.nasa.gov/gallery/images/sunspot00.html
supernova
http://hubblesite.org/newscenter/archive/releases/1999/19/im...
supernova remnant
http://www.spitzer.caltech.edu/images/2060-sig08-016-Vivid-V...
or
http://www.spitzer.caltech.edu/images/1276-ssc2004-15a%20-NA...
Surveyor
http://solarsystem.nasa.gov/multimedia/display.cfm?IM_ID=8463
or
http://solarsystem.nasa.gov/multimedia/display.cfm?IM_ID=1753
Syrtis Major
http://photojournal.jpl.nasa.gov/catalog/PIA00173
Tarantula Nebula
http://www.eso.org/public/images/eso0216a/
Titan
http://photojournal.jpl.nasa.gov/catalog/PIA08398
transit
http://sohowww.nascom.nasa.gov/hotshots/2006_11_06/
Trifid Nebula
http://www.eso.org/public/images/eso0930a/
or
http://www.spitzer.caltech.edu/images/1367-ssc2005-02a1-Visi...
ultraviolet astronomy
http://photojournal.jpl.nasa.gov/catalog/PIA03033
Uranus
http://hubblesite.org/newscenter/archive/releases/2007/32/im...
or
http://hubblesite.org/newscenter/archive/releases/1998/35/
Valles Marineris
http://photojournal.jpl.nasa.gov/catalog/PIA00422
Veil Nebula
http://hubblesite.org/image/2164/news_release/2007-30
Venus
http://photojournal.jpl.nasa.gov/catalog/PIA00106
Very Large Telescope
http://www.eso.org/public/images/eso-paranal-33/
Whirlpool Galaxy
http://hubblesite.org/newscenter/archive/releases/2005/12/im...
W. M. Keck Observatory
http://keckobservatory.org/gallery/detail/123/
