HubbleSite
Website of the Hubble Space Telescope.
http://hubblesite.org/ - Detail
Google PR

Spitzer Space Telescope
NASA's Spitzer Space Telescope is a space-based infrared observatory, part of NASA's Great Observatories program (which also includes Hubble, Chandra, and Compton). This is the mission's official homepage, including mission information, pictures, news, features, and more.
http://www.spitzer.caltech.edu/ - Detail
Google PR

Chandra X-ray Observatory
Chandra X-ray Observatory Center, gateway to the universe of X-ray astronomy.
http://chandra.harvard.edu/ - Detail
Google PR

Corot
Website of the French/European Corot space telescope.
http://smsc.cnes.fr/COROT/index.htm - Detail
Google PR

James Webb Space Telescope
Website of NASA's James Webb Space Telescope.
http://www.jwst.nasa.gov/ - Detail
Google PR

GLAST
GLAST is NASA's next-generation mission designed to explore the most energetic phenomena our universe.
http://glast.gsfc.nasa.gov/ - Detail
Google PR

Herschel Space Observatory
The Herschel Space Observatory is a space-based telescope that will study the Universe by the light of the far-infrared and submillimeter portions of the spectrum. It is expected to reveal new information about the earliest, most distant stars and galaxies, as well as those closer to home in space and time. It will also take a unique look at our own solar system.
http://herschel.jpl.nasa.gov/ - Detail
Google PR