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aberration of starlight

aberration of starlight   Quick reference

A Dictionary of Astronomy (3 ed.)

Reference type:
Subject Reference
Current Version:
2018
Subject:
Science and technology, Astronomy and Cosmology
Length:
152 words
Illustration(s):
1
The small apparent difference between the observed direction of a star and its true direction (see diagram). It is due to the combined effect of the observer’s motion across the path of ... More
Afternoon Constellation

Afternoon Constellation   Quick reference

A Dictionary of Space Exploration (3 ed.)

Reference type:
Subject Reference
Current Version:
2018
Subject:
Science and technology, Astronomy and Cosmology
Length:
137 words
Illustration(s):
1
A group of *Earth-observing satellites operated by *NASA and its international partners that closely follow one after another along the same orbital ‘track’. The satellites are in a polar ... More
Akatsuki

Akatsuki   Quick reference

A Dictionary of Space Exploration (3 ed.)

Reference type:
Subject Reference
Current Version:
2018
Subject:
Science and technology, Astronomy and Cosmology
Length:
204 words
Illustration(s):
1
A *Japanese Aerospace Exploration Agency (JAXA) *spacecraft designed to monitor volcanic activity on *Venus as well as information on its clouds and climate using multi-wavelength imaging. ... More
Aldrin, Buzz

Aldrin, Buzz (1930– )   Quick reference

A Dictionary of Space Exploration (3 ed.)

Reference type:
Subject Reference
Current Version:
2018
Subject:
Science and technology, Astronomy and Cosmology
Length:
277 words
Illustration(s):
1

who, with Neil *Armstrong, landed on the Moon on 20 July 1969 during the Apollo 11 mission, becoming the second person to set foot on the Moon....

aperture synthesis

aperture synthesis   Quick reference

A Dictionary of Astronomy (3 ed.)

Reference type:
Subject Reference
Current Version:
2018
Subject:
Science and technology, Astronomy and Cosmology
Length:
243 words
Illustration(s):
1

A technique used in radio astronomy to achieve high angular resolution. It uses an array of telescopes to simulate a single telescope of large aperture (...

Apollo project

Apollo project   Quick reference

A Dictionary of Space Exploration (3 ed.)

Reference type:
Subject Reference
Current Version:
2018
Subject:
Science and technology, Astronomy and Cosmology
Length:
800 words
Illustration(s):
1

The US space project to land a person on the Moon, achieved on 20 July 1969, when Neil *Armstrong...

astrometric binary

astrometric binary   Quick reference

A Dictionary of Astronomy (3 ed.)

Reference type:
Subject Reference
Current Version:
2018
Subject:
Science and technology, Astronomy and Cosmology
Length:
97 words
Illustration(s):
1

A binary star in which the presence of an invisible or unresolved component is inferred from irregularities in the proper motion of the visible component (...

Atlantis

Atlantis   Quick reference

A Dictionary of Space Exploration (3 ed.)

Reference type:
Subject Reference
Current Version:
2018
Subject:
Science and technology, Astronomy and Cosmology
Length:
181 words
Illustration(s):
1

The fourth of the US *space shuttles. It made its first flight on 3 October 1985 with a crew of five....

Aurora 7

Aurora 7   Quick reference

A Dictionary of Space Exploration (3 ed.)

Reference type:
Subject Reference
Current Version:
2018
Subject:
Science and technology, Astronomy and Cosmology
Length:
104 words
Illustration(s):
1

A *Mercury project spacecraft that flew the second orbital mission in May 1962, with astronaut Scott *Carpenter. Aurora 7...

black holes

black holes   Reference library

The Oxford Companion to Cosmology

Reference type:
Subject Reference
Current Version:
2008
Subject:
Science and technology, Astronomy and Cosmology
Length:
1,944 words
Illustration(s):
2

Black holes are amongst the most enigmatic objects predicted by modern physics. They are regions of space-time where the curvature

black-body spectrum

black-body spectrum   Reference library

The Oxford Companion to Cosmology

Reference type:
Subject Reference
Current Version:
2008
Subject:
Science and technology, Astronomy and Cosmology
Length:
535 words
Illustration(s):
1

A black-body is a perfect absorber and emitter of radiation. When placed in a bath of radiation, a black-body alters

black-body radiation

black-body radiation   Quick reference

A Dictionary of Astronomy (3 ed.)

Reference type:
Subject Reference
Current Version:
2018
Subject:
Science and technology, Astronomy and Cosmology
Length:
123 words
Illustration(s):
1

The thermal radiation that would be emitted by a *black body. Black-body radiation has a characteristic spectrum, described by ...

Bondar, Roberta

Bondar, Roberta (1945– )   Quick reference

A Dictionary of Space Exploration (3 ed.)

Reference type:
Subject Reference
Current Version:
2018
Subject:
Science and technology, Astronomy and Cosmology
Length:
160 words
Illustration(s):
1
Canada’s first female *astronaut and first neurologist in *space. The Ontario native was admitted as a Fellow of the Royal College of Physicians and Surgeons of Canada in neurology in ... ... More
Boomerang experiment

Boomerang experiment   Reference library

The Oxford Companion to Cosmology

Reference type:
Subject Reference
Current Version:
2008
Subject:
Science and technology, Astronomy and Cosmology
Length:
706 words
Illustration(s):
3

The Boomerang experiment, a rather contrived acronym standing for Balloon Observations Of Millimetric Extragalactic Radiation And Geophysics, was the most

braneworld

braneworld   Reference library

The Oxford Companion to Cosmology

Reference type:
Subject Reference
Current Version:
2008
Subject:
Science and technology, Astronomy and Cosmology
Length:
1,567 words
Illustration(s):
2

The braneworld is a contemporary picture of our Universe, which speculates that our visible Universe may be confined to

butterfly diagram

butterfly diagram   Quick reference

A Dictionary of Astronomy (3 ed.)

Reference type:
Subject Reference
Current Version:
2018
Subject:
Science and technology, Astronomy and Cosmology
Length:
103 words
Illustration(s):
1
A graph on which the latitudes of sunspots are plotted against time. It shows how spots migrate from higher latitudes (30–40° north or south) towards the equator (latitude 5° or so) ... More
Canadarm

Canadarm   Quick reference

A Dictionary of Space Exploration (3 ed.)

Reference type:
Subject Reference
Current Version:
2018
Subject:
Science and technology, Astronomy and Cosmology
Length:
243 words
Illustration(s):
1
A system used by the space shuttle and * International Space Station (ISS) to deploy or recover satellites and other payloads. It is also used to move ... More
Cassegrain telescope

Cassegrain telescope   Quick reference

A Dictionary of Astronomy (3 ed.)

Reference type:
Subject Reference
Current Version:
2018
Subject:
Science and technology, Astronomy and Cosmology
Length:
149 words
Illustration(s):
1

A reflecting telescope in which a convex secondary mirror reflects light to a focus through a hole in the primary mirror; it is an adaptation of the ...

Cassini–Huygens

Cassini–Huygens   Quick reference

A Dictionary of Space Exploration (3 ed.)

Reference type:
Subject Reference
Current Version:
2018
Subject:
Science and technology, Astronomy and Cosmology
Length:
359 words
Illustration(s):
1

A space probe developed jointly by NASA and the European Space Agency to explore the planet *Saturn. Cassini was launched on ...

celestial sphere

celestial sphere   Quick reference

A Dictionary of Astronomy (3 ed.)

Reference type:
Subject Reference
Current Version:
2018
Subject:
Science and technology, Astronomy and Cosmology
Length:
170 words
Illustration(s):
1

An imaginary sphere of indefinite size, used as a background for assigning positional coordinates to celestial objects (see diagram...

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