Seven astronauts died when the Space Shuttle Columbia disintegrated upon reentry on Feb. 1, 2003. NASA Deputy Administrator Pam Melroy looks back on the tragedy and how it shaped the agency.
A Japanese telescope captured images of the shape on Jan. 18. It was likely caused by the sun illuminating leftover fuel expelled from the rocket of a SpaceX launch.
University of Arizona scientists shared a satellite photo of what looks like a teddy bear etched into Mar's surface. The face probably comes from a broken up hill in the middle of a rocky crater.
There's no reason for alarm — but, a NASA engineer calls it "one of the closest approaches by a known near-Earth object ever recorded." It will be only 2,200 miles above the Earth's surface.
Around 7:30 p.m. ET Thursday, asteroid 2023 BU will pass 2,200 miles above the southern tip of South America. NASA says no need to panic — the asteroid has no chance of hitting Earth.
The Giant Metrewave Telescope in India captured that faint signal — coming from 8.8 billion light years away. Researchers say that receiving the signal is like reading a message from the past.
NPR's Mary Louise Kelly talks with Maria Valdes of Chicago's Field Museum about a fresh haul of meteorites she and other scientists collected in Antarctica.
Stumped astronomers are trying to get to the bottom of the origins of a huge cloud of gas, or nebula, recently discovered floating near the Andromeda galaxy.