Astronomy photos: best of 2011
A bright storm erupted in Saturn's atmosphere.
The nucleus of Comet Tempel 1
1,235 candidate exoplanets discovered by Kepler's space telescope
Faint emission nebula IC 410
Where are the most distant spacecrafts?
A Last Landing for Space Shuttle Endeavour
The surface of asteroid Vesta
Compact groups of galaxies Hickson 44 in Leo
Ice Holes on Mars
The entire surface of the innermost planet Mercury
Features on the Sun's face
Planet Kepler 22b - the closest match to Earth