The Solar System, home to Earth and countless other fascinating planets and moons, exists within the Milky Way galaxy. But ...

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

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

The largest interstellar comet discovered could be an alien technology. The newly found Manhattan-sized object, named ...

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 ...

Observations of the young HOPS-315 star system show an environment analogous to what our own nascent Solar System would have ...

Astronomers have discovered the earliest seeds of planets forming around HOPS-315, a baby star located 1,300 light-years away ...

Comet 3I/ATLAS was first identified by the Asteroid Terrestrial-impact Last Alert System (ATLAS), a global network of four ...

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

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

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