Space Station in the Sky Over Washington D.C.

The International Space Station is seen in this twenty-second exposure as it flies over the Washington National Cathedral, Wednesday, Nov. 29, 2017. Onboard are: NASA astronauts Joe Acaba, Mark Vande Hei, and Randy Bresnik; Russian cosmonauts Alexander Misurkin and Sergey Ryanzansky; and ESA astronaut Paolo Nespoli.

A Proving Ground in Space

Dellingr is a shoebox-sized spacecraft built to show that CubeSat platforms could be cost-effective, reliable and capable of gathering highly robust science.

Colorado Backroad

Alpha and Omega

These two images illustrate just how far Cassini traveled to get to Saturn.

The Fresh Air of Saentis Mountain

Rising Above the Fog

Star Wanders Too Close to a Black Hole

This artist's rendering shows the tidal disruption event named ASASSN-14li, where a star wandering too close to a 3-million-solar-mass black hole was torn apart. The debris gathered into an accretion disk around the black hole.