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 ...

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

Astronomers using NASA's Hubble Space Telescope have imaged the largest protoplanetary disk ever observed circling a young ...

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

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 ...

The cold and remote planets originally earned their label of "ice giants" to contrast their interiors from those of Jupiter ...

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

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 ...

Learn what the first maps of the sun's atmospheric boundary reveal about solar wind and its escape into space.

NASA’s Perseverance rover has made a significant discovery on Mars: a meteorite, which could provide vital clues about the ...