Nearly a month ago, a mysterious object was seen hurtling through the solar system and later confirmed as an interstellar ...

A lone body, making one passage around the Sun for every ten by Neptune, is rewriting the rules of planetary dynamics in the ...

Explore ten scientifically grounded facts about our solar system, from unique planetary features to surprising interplanetary ...

There’s a visitor in town, and its name is 3I/ATLAS. The presumed interstellar comet presents a rare opportunity for ...

The newly discovered world — a "sednoid" — challenges what planetary scientists thought they knew about the edge of the solar ...

The celestial body's unusual orbit “implies that something extraordinary occurred" in the early days of the solar system—and ...

Evidence that rocky planets beyond Jupiter formed as rapidly, and at the same time, as the inner planets could transform our ...

For Harold Kozak, one of life’s greatest pleasures is the opportunity to educate the public about the stars and the vast ...

"It is possible that a planet once existed in the solar system but was later ejected, causing the unusual orbits we see today ...

The answers to those questions depend on how we define the death of the solar system.

International astronomers have for the first time witnessed the birth of a planetary system beyond Earth's sun that could one ...

Astronomers first identified these minerals using the now-three-year-old James Webb Space Telescope. To see where exactly the ...