New Horizons is still on duty in extended mission mode, diving ever deeper into the Kuiper Belt to examine ancient, icy mini-worlds in that vast region beyond the orbit of Neptune.

IN 1687, Sir Isaac Newton published his magnum opus, Philosophiæ Naturalis Principia Mathematica, which effectively synthesized his theories on motion, velocity, and universal gravitation.

Astronomers detected a persistent radio signal from a far-off galaxy that appears to flash with surprising regularity. Named FRB 20191221A, this fast radio burst, or FRB, is currently the longest-lasting FRB, with the clearest periodic pattern, detected to date.

Dubbed “Webb’s First Deep Field,” it is the first full-color image from the $10 billion observatory that launched into space last year.

The image, known as “Webb’s First Deep Field,” will be the deepest and highest-resolution view of the universe ever captured. Biden is scheduled to release it on Monday.

For decades, we've dreamed of visiting other star systems. There's just one problem – they're so far away, with conventional spaceflight it would take tens of thousands of years to reach even the closest one.

A new study by a team of Canadian researchers shows that our Solar System will not experience a close and disruptive stellar flyby for a very long time!

NASA has set an aggressive launch for its Artemis 1 Moon mission following the successful June 20th “wet dress rehearsal” fueling test of the SLS rocket that will carry the flight to space

One of the most distant known galaxies, observed in the very earliest years of the Universe, appears to be rotating

Commentary: Let's talk about the fiscal footprint of NASA's latest lunar endeavor, Artemis.

Astronauts lose decades' worth of bone mass in space that many do not recover even after a year back on Earth, researchers said Thursday, warning that it could be a "big concern" for future missions to Mars.

Comet C/2017 K2 is expected to be nearest to us on July 14.

So far, no space exploring nations have claimed responsibility for the rocket. 

Alien rocky worlds cocooned in hydrogen and helium could prove habitable to life as we know it for billions of years, with key features such as temperate conditions and liquid water, a new study finds.

The celestial show, best viewed between June 17 and June 27, will be the last time the five brightest planets cluster in the sky until 2040.

A sunspot pointing toward Earth has the potential to cause solar flares, but experts told USA TODAY it's far from unusual and eased concerns over how flares would affect the Blue Planet.

NASA’s James Webb Space Telescope got thwacked, and it’ll probably get thwacked again.

The finding settles a long-standing debate about the gas giant's formation.

“NASA’s Perseverance Mars Rover — please tidy up after yourself.”

MIT astronomers discovered a multiplanet system just 33 light-years from Earth, making it one of the closest known multiplanet systems. The system likely hosts at least two terrestrial, Earth-sized planets.