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单词 Small Astronomy Satellite
释义
Small Astronomy Satellite

Astronomy
  • 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.

    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.


Space Exploration
  • 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.


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