Extreme Ultraviolet Explorer


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Extreme Ultraviolet Explorer:

see ultraviolet astronomyultraviolet astronomy,
study of celestial objects by means of the ultraviolet radiation they emit, in the wavelength range from about 90 to about 350 nanometers. Ultraviolet (UV) line spectrum measurements are used to discern the chemical composition, densities, and temperatures
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Extreme Ultraviolet Explorer

(EUVE) A NASA satellite launched June 1992 to carry out the first survey of the sky in the extreme ultraviolet (7–76 nm) region of the spectrum. Radiation at these wavelengths is totally screened out by the Earth's atmosphere, and so this mission was expected to be of groundbreaking significance. The 3.2-tonne satellite carried four photometric imaging systems and a three-channel EUV spectrometer. The imaging instruments were used to accomplish the sky survey. The spectrometers were used for the pointed spectroscopic programs, which collected data from over 350 unique astronomical targets. NASA authorized a Guest Observer Program of pointed spectroscopy that ended on Jan. 31, 2001, when the EUVE was shut down. The satellite fell out of orbit and broke up in the Earth's atmosphere at the end of Jan. 2002.
References in periodicals archive ?
Both the venerable International Ultraviolet Explorer satellite, now in its 17th year of operation, and the Extreme Ultraviolet Explorer craft, launched in 1992, will take spectra of the plumes of material carried aloft by the Jovian explosions.
Welsh of NASA headquarters and his colleagues have used ultraviolet data from two orbiting observatories, ROSAT and the Extreme Ultraviolet Explorer, to map the contours of a huge void in space that extends about 600 light-years across, well beyond the solar system.
Now, the Roentgen satellite (ROSAT) and the Extreme Ultraviolet Explorer (EUVE) spacecraft have provided new details of the sun's environment.
The Extreme Ultraviolet Explorer (EUVE), launched last June, detects this band of radiation, which can't penetrate Earth's atmosphere and is intermediate in energy between the near ultraviolet and X-rays (SN: 5/23/92, p.344).
Stuart Bowyer of the University of California, Berkeley, announced that another space-borne observatory, the recently launched Extreme Ultraviolet Explorer, detected a quasar-like object about 2 billion light-years from Earth.

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