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

The astronomers observed hot minerals just beginning to solidify – the first specks of planet-forming material, the ...

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

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

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

Scientists have issued a concerning update on a mystery interstellar object travelling through our solar system.

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

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

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

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

The star is surrounded by a protoplanetary disk, and this disk is the first evidence of debris condensing into what will ...

“What we’ve been trying to do is find a baby version of our Solar System somewhere else,” Merel van ’t Hoff, an astronomer at ...