A new image from the Sloan Digital Sky Survey consists of 1.2 trillion pixels and covers a third of the night sky. It captures half a billion individual stars and galaxies.
Here's the latest Hubble Space Telescope on the green cloud of gas known as Hanny’s Voorwerp. The cloud now appears to be lit up by the bright light of a nearby quasar, and shows signs of ongoing star formation.
An amazing collection of images of the partial solar eclipse of Jan. 4, 2011 can be found at The Big Picture. The eclipse was seen in Earth's eastern hemisphere.
Astronomers have found a star rich in zirconium, the material used to make a substitute for diamonds. The star is called LS IV-14 116. It is 2,000 light years from Earth.
Astronomers think they've discovered why a galaxy's spiral arms wind up tightly around the galaxy's core as the system rotates. Read more on spiral galaxies.
The Cassini spacecraft finished its four-year mission to explore Saturn and its rings and moons in June 2008. But it is still sending back images of Saturn's moons.
Some craters near the moon's poles never see sunlight. Now 1,700 photos from the have been combined to show the moon's darkest places in the "illumination map".