Space shuttle Atlantis blasted off from Cape Canaveral at 10:29 a.m. CDT (15:29 UTC) on July 8, 2011 for a final mission. This amazing photo captured the launch from above.
The quasar ULAS J1120+0641 is the brightest object yet discovered in the early universe, powered by a black hole with a mass two billion times that of the sun.
Astronomers use various telescopes to piece together the complex history of Pandora's cluster, showing a pile-up of at least four separate galaxy clusters.
The New Horizons spacecraft will have enough fuel for a side trip to a frozen object near Pluto, and IceHunters wants your help in picking the spacecraft rendezvous.