lunar eclipse Watch how Hubble Telescope used a lunar eclipse for detecting life on exoplanets Andrea James
Hubble NASA released this astonishing image in celebration of Hubble's 30th anniversary David Pescovitz
galaxies More than 2 trillion galaxies in the universe, at least 10 times as many as we thought Rob Beschizza
Spitzer Famous "star cradle" might have been destroyed long before we ever discovered it Maggie Koerth