Week's Best Space Pictures: Auroras Bloom and an Exoplanet 'Bleeds'

The northern lights bloom over Earth, while radiation blasts an exoplanet's atmosphere.

Feed your need for heavenly views of the universe with our pick of the most awe-inspiring space pictures. This week, researchers capture echoes from a double star, engineers protect a billion-dollar telescope, and thawing patches of carbon dioxide etch gullies on the surface of Mars.