A SpaceX Falcon 9 rocket lifts off Monday from Florida's Cape Canaveral Air Force Station carrying 60 Starlink satellites. The Starlink constellation eventually will consist of thousands of satellites designed to provide worldwide high-speed Internet service.
Paul Hennessy/NurPhoto via Getty Images
The planet Mercury is seen in silhouette (lower left) as it transits across the face of the sun on May 9, 2016. Another transit of Mercury — the last one for 30 years — will take place Monday.
Engineer Joel Steinkraus tests solar panels on one of two CubeSats that made up NASA's Mars Cube One mission. The MarCO CubeSats — the first to be sent into deep space — flew to Mars and relayed telemetry from NASA's InSight lander.
Astronauts Christina Koch and Jessica Meir conducted some much-needed work on the exterior of the International Space Station on Friday. Along the way, they also enjoyed amazing views of Earth.
Astronauts Christina Koch (right) and Jessica Meir pose for a photo on the International Space Station on Oct. 4. NASA moved up the first all-female spacewalk because of a power system failure at the space station.
NASA via AP