Scientists have found the oldest direct evidence for tectonic motion on Earth by more than half a billion years ...

Astronomers have detected strange "wobbles" in the light curve of a super bright supernova, hinting that a magnetar was born inside the extreme stellar explosion.

Space scientists have captured a comet breaking into pieces by accident. NASA’s Hubble Space Telescope witnessed the incredibly rare event while searching for another cosmic target. The comet K1, ...

NASA's experimental supersonic X-59 jet designed to travel faster than the speed of sound is preparing for its second flight from California.

"It turns out that they're really cracked too, and that was the missing piece of the puzzle." ...

There's more evidence that water once flowed on Mars with the discovery of an ancient river delta deep below the surface.

Several of the Earth’s systems are changing faster than predicted as global temperatures rise, scientists say.

Using its ground-penetrating radar instrument known as RIMFAX, Perseverance peered deeper beneath the Martian surface than ever before, revealing geological structures buried as far as 115 feet below ...

Using ground-penetrating radar, NASA's Perseverance rover has detected underground remains of an ancient river delta on Mars in some of the oldest evidence yet obtained showing how water once flowed ...

Using ground-penetrating radar, NASA's Perseverance rover has detected underground remains of an ancient river delta on Mars.

The latest evidence that Mars was once a warmer, wetter world comes from a surprising place—the hidden subsurface depths of ...

In a stroke of luck, astronomers saw the comet C/2025 K1 (ATLAS) break into four or five fragments in November after it passed close to the sun.