A science experiment aboard NASA's Curiosity rover has found tantalizing traces of possible past life on Mars. But there could be other explanations for where these compounds came from.

The partial solar eclipse will be visible in various locations in the U.S. Northeast.

In deference to President Trump's anti-DEI order, the space agency has removed a promise to send the "the first woman, first person of color" to walk on the moon aboard the Artemis III mission.

The Dark Energy Spectroscopic Instrument (DESI) is studying dark energy and the accelerated expansion of the universe.

If our 13.8 billion-year-old cosmos could be considered middle-aged, researchers note these new images captured around its 380,000th birthday represent a snapshot of the universe as a newborn.

Residents of Sunita William's ancestral village and her Indian relatives celebrate her safe landing. She and another astronaut returned to Earth this week after more than nine months in space.

Astronauts face several risks during spaceflight, including exposure to radiation.

NASA astronauts Butch Wilmore and Suni Williams returned to Earth after spending nine months on the International Space Station. It was supposed to be an eight-day mission but hit a snag.

Jack Fischer spent more than 100 days aboard the International Space Station in 2017. He described to NPR what being in space for so long does to the body and what it feels like to return home.

After months in space, astronauts Suni Williams and Butch Wilmore are finally scheduled to return home in a SpaceX capsule on Tuesday evening.