(Ivan Eder)

The 2014 Astronomy Photographer of the Year contest, which is run by Britain’s Royal Observatory, Greenwich, received more than 2,500 entries. Here are a couple of the finalists:

Ivan Eder looked 7,500 light-years away into the constellation Cassiopeia to photograph the Heart Nebula, a vast region of glowing gas energized by a cluster of young stars at its center.

Tommy Richardsen captured an image in Steinsvik, Norway, during a strong aurora flare that lasted only a few minutes. The figure on the right side is the photographer’s brother, who was searching for his lost lens cap.