"This is a big step in understanding the outer solar system," team leader Rosemary Pike from the Center for Astrophysics | ...

"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 ...

Astronomers have discovered a "fossil" world lying in the outskirts of the solar system, according to new research.

Astronomers unveiled a striking view of the new interstellar visitor 3I/ATLAS on its journey toward the inner solar system.

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

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

The researchers used the James Webb Space Telescope to probe the chemical make-up of material around the star, and found the ...

Just the third-ever confirmed interstellar object has been detected in our solar system. Here's what we know. (Spoiler: It's not aliens.) ...

“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 Purdue University in West Lafayette, Indiana, tells Nature’s Jenna Ahart.

It's the earliest stage of planet formation ever seen by scientists. The new planetary system is taking shape around HOPS-315 ...

Astronomers have discovered the earliest seeds of rocky planets forming in the gas around a baby sun-like star, providing a ...