Light Echoes Used to Study Protoplanetary Disks

Light Echoes Used to Study Protoplanetary Disks

Ice Scours the North Caspian Sea

Ice Scours the North Caspian Sea

Morning Sunglint Over the Pacific

Morning Sunglint Over the Pacific

Staying Strong: Spaceflight Muscle Loss Study Aims to Benefit Patients on Earth

Staying Strong: Spaceflight Muscle Loss Study Aims to Benefit Patients on Earth

Newly discovered baby Titanosaur sheds light on dinosaurs' early lives | NSF - National Science Foundation

Newly discovered baby Titanosaur sheds light on dinosaurs' early lives | NSF - National Science Foundation

Preparing the Vehicle Assembly Building for NASA's Next Rocket

Preparing the Vehicle Assembly Building for NASA's Next Rocket

Computers play a crucial role in preserving the Earth | NSF - National Science Foundation

Computers play a crucial role in preserving the Earth | NSF - National Science Foundation

NASA's Fermi Telescope Poised to Pin Down Gravitational Wave Sources

NASA's Fermi Telescope Poised to Pin Down Gravitational Wave Sources

Liftoff at NASA's 16th Annual Student Launch Challenge

Liftoff at NASA's 16th Annual Student Launch Challenge: One of dozens of high-powered rockets lifts off on April 16, 2016, during NASA's 16th annual Student Launch challenge, held near Marshall Space Flight Center in Huntsville, Alabama from April 13-16. Nearly 50 middle and high school, college and university teams from 22 states competed in the challenge.

Y Marks the Spot

Y Marks the Spot: A sinuous feature snakes northward from Enceladus' south pole like a giant tentacle.

Early Ice Breakup of Beaufort Sea Due to Early Warm Temperatures

Early Ice Breakup of Beaufort Sea Due to Early Warm Temperatures: This image of early ice breakup of the Beaufort Sea, north of Alaska, was taken by the Suomi NPP satellite's Visible Infrared Imaging Radiometer Suite (VIIRS) instrument infrared channel, at around 1148 UTC on April 13, 2016.

April 14, 1981, Landing of First Space Shuttle Mission

April 14, 1981, Landing of First Space Shuttle Mission

T-38C Passes in Front of the Sun at Supersonic Speed

T-38C Passes in Front of the Sun at Supersonic Speed

NASA to Attach, Test First Expandable Habitat on International Space Station

NASA to Attach, Test First Expandable Habitat on International Space Station: The first human-rated expandable structure that may help inform the design of deep space habitats is set to be installed to the International Space Station Saturday, April 16. NASA Television coverage of the installation will begin at 5:30 a.m. EDT.

The Great Divide

The Great Divide: It's difficult to get a sense of scale when viewing Saturn's rings, but the Cassini Division (seen here between the bright B ring and dimmer A ring) is almost as wide as the planet Mercury.