3I/ATLAS has now made its closest approach to the sun and Earth and is now heading back out toward the outer solar system. On ...

Mercury has long baffled astronomers because it defies much of what we know about planet formation. A new space mission ...

The giant planets weren't always where we find them today. Jupiter, Saturn, Uranus and Neptune formed in a more compact ...

In the first episode of "The Expanse" (which debuted 10 years ago this weekend), a spaceship makes the biggest meal of ...

Beyond the asteroid belt lies a realm of giants, rings, and frozen mysteries. This video tours the colossal storms of Jupiter, the graceful rings of Saturn, the sideways tilt of Uranus, and the ...

When Kate Middleton handled a small piece of rock at London’s Natural History Museum she became one of the few people on ...

Two of NASA’s longest-running space missions, Voyager 1 and Voyager 2, have detected a searing-hot region of space where the ...

Dec. 19 (UPI) -- Comet 3I/ATLAS passed its nearest point to Earth early Friday and approaching within 168 million miles.

Hubble identified the largest known protoplanetary disk, revealing a turbulent, chaotic environment with material extending ...

Astronomers have repeatedly observed events near a distant star that mirror processes from the early solar system’s ...

Astronomers have repeatedly observed events near a distant star that mirror processes from the early solar system's ...

Nasa’s Hubble Space Telescope has achieved a historic milestone by capturing direct evidence of catastrophic asteroid collisions in a nearby planetary system, Fomalhaut, located just 25 light-years ...