space

There was no reason for alarm, as a NASA engineer called it "one of the closest approaches by a known near-Earth object ever recorded." It was 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.

The retired astronaut, who was the second person to walk on the moon, announced his marriage to Anca Faur.

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.

Short Wave's scientist in residence Regina Barber talks with NASA astronaut Josh Cassada about daily life on the International Space Station.

The All-Domain Anomaly Resolution Office, formed last year, is focusing on some 171 cases — including some in which objects "appear to have demonstrated unusual flight characteristics."

NASA and Russia's space agency said Wednesday that they're planning to send up an uncrewed Soyuz spacecraft to the International Space Station to replace the one that sprung a leak in December.

Astronomer Jackie Faherty outlines the most exciting sky events you can put on your calendar in 2023, from eclipses to meteor showers and more.