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Galaxy Evolution Explorer (GALEX)
GALEX is a current NASA satellite mission studying the Universe in ultraviolet light. Part of its mission is to produce a first-of-its-kind all-sky survey in the ultraviolet. (wavelengths: 0.135 - 0.28 microns).
ROSAT All-Sky Survey (RASS)
ROSAT, the Röntgen Satellite, was an X-ray observatory conducted in collaboration between Germany, the United States, and the United Kingdom. During its mission, ROSAT surveyed almost the entire sky in X-ray light (wavelengths: 0.62 - 12.4 nanometers).
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| The sky in X-ray
light from ROSAT. The image has been
exposure corrected but not cleaned of contamination. The strong striping
of the data is an artifact of the contamination and is caused by
several processes. The image is an
Aitoff-Hammer equal-area projection with
the Galactic center at the center. |
EGRET All-Sky Survey
The Energetic Gamma Ray Experiment Telescope (EGRET) was an instrument aboard NASA's Compton
Gamma Ray Observatory (CGRO), which was a space observatory flown in Earth orbit during the 1990s. EGRET conducted an all-sky survey in gamma ray light (wavlengths: < 0.012 picometers).
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| The EGRET all-sky map shows an image of the sky in gamma rays energies in Aitoff projection. The diffuse emission along the Galactic plane is primarily due to cosmic-ray interactions with the interstellar medium. The Vela, Geminga and Crab pulsars are clearly visible as bright knots of emission in the Galactic plane in the right portion of the image. |
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