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Great Observatories
Introduction References & Edit History
Images
Hubble Space Telescope Mars, with the dark feature Syrtis Major visible near the planet's centre and its north polar cap at the top, imaged by the Hubble Space Telescope, 1997. EGRET all-sky map The Compton Gamma Ray Observatory as seen through the space shuttle window during deployment in 1990. Chandra X-ray Observatory Sagittarius A* Spitzer Space Telescope Illustration of a space-based long-range interferometer system for detecting gravitational waves, showing three spacecraft in triangular formation exchanging laser beams, with labeled components including interferometers, solar arrays, thrusters, and the path of gravity waves, as well as Earth's position and orbital path in the background.

Great Observatories: References & Edit History

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Article History

Type Description Contributor Date
Modified link of Web site: NASA - Great Observatories. Jun 19, 2018
Add new Web site: NASA - Great Observatories. Jul 14, 2011
Updated for the cancellation of the Beyond Einstein Great Observatories in 2011. May 18, 2011
Added image of EGRET gamma-ray all-sky map. Mar 10, 2010
Article revised and updated. Jan 22, 2009
New article added. Jan 09, 2009
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