NASA

South America and much of the continental United States had the best view of Sunday night's lunar eclipse, which lasted nearly five hours.

The latest estimate from various forecast centers around the world say the planet is approaching a warming threshold international agreements are trying to prevent.

NASA and the European Space Agency are gearing up to bring home a pristine sample of Martian rock. But given the small chance of life on the red planet, they have to grapple with safety questions.

During a partial solar eclipse, the moon is not perfectly aligned with the Earth and sun, so it will not completely cover the sun.

Four astronauts are making their way to the International Space Station after launching early Wednesday morning. They’ll spend close to half a year aboard the station, conducting science experiments and performing maintenance on the orbiting lab.

Watkins is among the four astronauts who SpaceX launched as part of NASA's Crew-4 mission to the International Space Station.

Three rich businessmen returned from the International Space Station with their astronaut escort Monday, wrapping up a pricey trip that marked NASA's debut as a B&B host.

The return of the first all-private crew to visit the International Space Station is delayed once again. NASA says weather at recovery sites along Florida's coast are to blame.

NASA should send probes to the ice giant planet of Uranus and to a moon of Saturn where conditions could be right for life. Those are some of the recommendations in a new report to the space agency.

The comet, known as C/2014 UN271 (Bernardinelli-Bernstein), has an estimated diameter of about 80 miles. That's bigger than Rhode Island and about 50 times larger than the heart of most comets.

SpaceX launched three rich businessmen — American, Canadian and Israeli — and their astronaut escort to the International Space Station for more than a week's stay.

These so-called exoplanets include rocky worlds similar in size to Earth, gas giants larger than Jupiter and even "mini-Neptunes."