A rocky exoplanet outside the Earth's solar system may have an atmosphere, according to new evidence gathered by NASA ...

A violent stellar explosion has just given astronomers their clearest look yet at how some of the raw ingredients for biology ...

A giant, 250,000-mile X-ray cloud has been found around the interstellar comet 3I/ATLAS, baffling experts. Discover why this ...

NASA’s Chandra telescope uses a new X-arithmetic method to compare X-ray energies and show how supermassive black holes shape galaxy clusters and galaxy groups, revealing differences in gas movement a ...

Most smaller galaxies may not have supermassive black holes in their centers, according to a new study using NASA's Chandra X ...

NASA astronaut Jonny Kim has returned to Earth after an eight-month mission aboard the International Space Station. He ...

NASA astronaut Jonny Kim flew home with two Roscosmos cosmonauts from the International Space Station packed tight in their ...

With major eclipses, brilliant supermoons, and lineups of five or more planets, 2026 offers something awe-inspiring in every season. Here’s what to watch for.

"This observation also demonstrates that we can use Webb to find individual stars when the universe was only 5% of its ...

A major new study lays out plans for crewed missions to Mars, with the search for extraterrestrial life being a top priority ...

After a yearslong series of setbacks, NASA's Escape and Plasma Acceleration and Dynamics Explorers, or ESCAPADE, mission has ...

Astronomers have sighted the oldest known stellar explosion, dating back to when the universe was less than a billion years ...