astronomy
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The Webb Space Telescope, Hubble's successor, will see in infrared, the light emitted by the farthest objects we can detect.
HubbleSite -- Out of the ordinary...out of this world.
An open-source, photo-realistic, real-time, three-dimensional viewing of the solar system, the galaxy and the universe. Celestia is an easy to use, freely-distributed, multi-platform, open source, software package which has become a valuable tool for astronomy education.
Spacehack
Cassini-Huygens: Multimedia-Images
NASA's Cassini-Huygens mission to Saturn was awarded the 2012 National Air and Space Museum Trophy for Current Achievement on March 21 at a black-tie dinner in Washington, D.C.December 05, 2011 NASA's Kepler mission has confirmed its first planet in the "habitable zone," the region around a star where liquid water could exist on a planet's surface. Kepler also has discovered more than 1,000 new planet candidates, nearly doubling its previously known count.
PlanetQuest: Exoplanet Exploration
Stellarium open source planetarium
Stellarium 0.11.2 is a stable version that introduces some new features and closes 47 bug and wishlist reports. A lot of work has been done on making translatable text that wasn't localized before. This includes most of the text used by the default plug-ins, landscapes, countries, script names and descriptions.