The planets in order from the Sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. If you include the ...

Newfound interstellar object 3I/ATLAS may be carrying pristine material from early in the Milky Way’s star-forming history.

To the right of the star, there is a small red planet touching one of the star's magnetic field lines. The flare is blasting ...

Rocky bodies called protoplanets were thought to have formed slightly earlier in the inner solar system than those beyond the ...

Though 3I/ATLAS will never come close to Earth, its passage offers a rare chance to study material beyond our solar system ...

For years, scientists have been scanning the icy outskirts of our Solar System for an unknown massive planet. The ...

An object dubbed 3I/ATLAS is only the third interloper from outside the Solar System seen in all of human history.

A comet has entered the Solar System from interstellar space and will pass through the inner planets later this year, NASA ...

NASA has discovered a new interstellar comet that's currently located about 420 million miles away from Earth. The space ...

Officially named 3I/ATLAS, the comet was confirmed as having originated outside of Earth's solar system on July 3, according ...

Astronomers are tracking a newly spotted comet hailing from parts unknown, only the third time such an interstellar object ...

NASA has discovered an interstellar comet that's wandered into our backyard. The space agency spotted the object with the ...