One billion stars
New view of the blue marble
Furthest-ever image of the universe
9 billion pixels of the Milky Way galaxy
The view 50 million light years away
Panorama of Mars
A not-so-dark "dark core"
A twister on Mars
Saturn storms
European panorma at night from the International Space Station
The "UFO galaxy"
Groundhog day on Mars
The Moon and the Milky Way
Thor's Helmet revisited
Enterprise flying over NYC
Janus, one of Saturn's creepy moons
The Pencil nebula
Coronal hole on the Sun
The slow death of R Sculptoris
Transit of Venus
Transit of Venus up close
A rocket launch over an aurora
Overlapping galaxies
The remains of supernova W44
Orion over the Temple of Kukulkan
Mars Rover Curiosity's descent...
...and the long, lonely trek
Stars forming in the Carina nebula
Space Shuttle Endeavor cruising through L.A.
Solar eruptions
The birth of stars in 30 Doradus
Perseid meteor shower
Felix Baumgartner's SpaceFall
Far away black holes
Orion's crazy clouds
Aurora Australis (southern lights) from space
Spiral galaxies
Close-up of Saturn's rings
Centaurus A galaxy
Hurricane Sandy from space
A cold fire in Orion's belt
Electrical flashes seen from the International Space Station
New views of Eagle nebula
Phytoplankton blooms in the Atlantic
Mars Rover Opportunity selfie
Gaseous ejections from U Camelopardalis
New views of Helix nebula
The best space photos of 2012, everyone.