Update
The Oxford Biblical Studies Online and Oxford Islamic Studies Online have retired. Content you previously purchased on Oxford Biblical Studies Online or Oxford Islamic Studies Online has now moved to Oxford Reference, Oxford Handbooks Online, Oxford Scholarship Online, or What Everyone Needs to Know®. For information on how to continue to view articles visit the subscriber services page.
Dismiss

You are looking at 1-20 of 209 entries  for:

  • All: Small Astronomy Satellite x
clear all

View:

Overview

Small Astronomy Satellite

A NASA series of three small satellites devoted to X-ray and gamma-ray astronomy. SAS-1, also known as Explorer 42, was renamed Uhuru after launch in 1970. It was the first X-ray ...

Small Astronomy Satellite

Small Astronomy Satellite   Quick reference

A Dictionary of Space Exploration (3 ed.)

Reference type:
Subject Reference
Current Version:
2018

...Small Astronomy Satellite ( SAS ) A series of NASA satellites dedicated to celestial X-ray astronomy . The first was Uhuru , also known as SAS-1 , launched in December 1970 . SAS-2 was launched in November 1972 to take the first detailed look at the gamma-ray sky; however, a power-supply failure terminated the mission in June 1973 . SAS-3 was launched in May 1975 and discovered the precise location of about 60 X-ray sources before the satellite's lifespan ended in April 1979...

Small Astronomy Satellite

Small Astronomy Satellite   Quick reference

A Dictionary of Astronomy (3 ed.)

Reference type:
Subject Reference
Current Version:
2018

... Astronomy Satellite A NASA series of three small satellites devoted to X-ray and gamma-ray astronomy. SAS-1, also known as Explorer 42, was renamed Uhuru after launch in 1970 . It was the first X-ray satellite, and performed the first X-ray sky survey. SAS-2, otherwise known as Explorer 48, was a gamma-ray mission, launched in 1972 November which observed until 1973 June . The last of the series, SAS-3, or Explorer 53, was launched in 1975 May to study individual X-ray sources; it operated until 1979 April ....

Small Astronomy Satellite

Small Astronomy Satellite  

A NASA series of three small satellites devoted to X-ray and gamma-ray astronomy. SAS-1, also known as Explorer 42, was renamed Uhuru after launch in 1970. It was the first X-ray satellite, and ...
coorbital

coorbital  

Describing two or more bodies, such as satellites of a planet, which share the same or a similar orbit. There are two possible circumstances in which this can happen. In one, the bodies can be ...
direct-broadcast satellite

direct-broadcast satellite  

(DBS)A high-power communications satellite that transmits television broadcasts directly to small parabolic dish aerials. About 25 million analogue DBS receivers were installed in homes throughout ...
satellite

satellite  

A small body that orbits a larger one, particularly the natural satellites of the planets. A natural satellite is also known informally as a moon. All the planets have at least one natural satellite, ...
gamma-ray astronomy

gamma-ray astronomy  

The study of electromagnetic radiation from space at the very shortest wavelengths and with the highest photon energies (see gamma rays). Gamma rays are produced in regions of extremely high ...
Uhuru

Uhuru  

The SAS-1 satellite, launched from a platform called San Marco off the coast of Kenya in 1970 December and named Uhuru after the Swahili for Freedom; also known as Explorer 42. It carried out the ...
satellite galaxies

satellite galaxies  

A satellite galaxy is simply a small, low-mass galaxy that is in orbit about a much larger and more massive galaxy.The best-studied satellite galaxies are those orbiting our own ...
Carpo

Carpo  

A small satellite of Jupiter, also known as Jupiter XLVI. It orbits 17 056 000 km from the planet's centre every 455.1 days at an inclination of 55°. Carpo has a diameter of about 4 km and was ...
Themisto

Themisto  

A small satellite of Jupiter, distance 7 450 000 km; also known as Jupiter XVIII. It orbits every 130.0 days at an inclination of 46° to the planet's equator and is about 8 km in diameter. Themisto ...
infrared cirrus

infrared cirrus  

Wispy clouds of infrared emission first detected by the Infrared Astronomical Satellite and prominent at 60 and 100 μm. Most infrared cirrus is believed to be emission from dust grains in hydrogen ...
Galilean satellites

Galilean satellites  

The four largest satellites of Jupiter, namely Io, Europa, Ganymede, and Callisto, which were discovered by Galileo in 1610. All four are easily visible in binoculars and small telescopes, and would ...
Asaph Hall

Asaph Hall  

(1829–1907) American astronomerBorn at Goshen in Connecticut, Hall had to leave school at the age of 13 and support his family as a carpenter, following the death of his father. He educated himself, ...
resonance

resonance  

An effect in the orbits of celestial objects due to a commensurability in their orbital periods. If the ratio of their orbital periods is close to a small fraction, such as ⅓, ⅔, or ¾, the bodies are ...
Gravity Recovery and Climate Experiment

Gravity Recovery and Climate Experiment  

(GRACE)A joint US–German project to measure the Earth's gravitational field very precisely using two satellites in a polar orbit and flying approximately 220 kilometres apart. Slight variations in ...
Minotaur rocket

Minotaur rocket  

A four-stage US rocket for launching small satellites. Part of the motor came from decommissioned Minuteman military missiles. The first Minotaur was launched in early 2000, and had placed 12 ...
ALEXIS

ALEXIS  

A small US Department of Energy satellite carrying six telescopes to map the soft X-ray and extreme ultraviolet background over the whole sky. ALEXIS (Array of Low-Energy X-ray Imaging Sensors) was ...
Encke Division

Encke Division  

A division in Saturn's rings about 325 km wide, centred at 133 570 km from the planet's centre, near the outer edge of the A Ring. It was the first division to be discovered after Cassini's Division, ...
COROT

COROT  

A joint French–ESA satellite, launched in 2006 December to observe up to 200 000 stars with a 0.27-m telescope in search of dips in brightness caused by the transit of planets larger than the Earth. ...

View: