Earth images from Alexander Gerst in 4K | European Space Agency

Chandra Deep Field South

Take a Splash Into the Cosmos | NASA Spitzer Space Telescop

Expedition 40 Hands Over the Space Station to Expedition 41

Oleg's Last Orbital Pictures for You: Earth Clouds on Sept. 9, 2014

Around the nova V445 Puppis

Canadian Lakes | International Space Station

Long Duration Solar Flare & Earth-directed Coronal Mass Ejection

Hubble Space Telescope Finds Companion Star Hidden for 21 Years in a Supernova's Glare | NASA/ESA

Hubble Space Telescope Finds Supernova Companion Star after Two Decades of Searching | NASA/ESA

Flying Through an Aurora | NASA Picture of The Day

Rosetta Comet 67P: Color Close-up on September 5, 2014 | ESA

Earth's Blue Oceans | International Space Station

The North Sea: Autumn coming | International Space Station

A Starry Window View | International Space Station

"Atoms-for-Peace": A galactic collision in action