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

How big is the universe? In this video, we embark on a journey from our solar system to the edge of the observable cosmos.

In a cosmic first, scientists watched planet-forming materials begin to solidify around a newborn star, offering a peek into what our Solar System may have looked like at birth. It’s a stunning replay ...

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 ...

Very few meteorites from this planet ever reach Earth and none have been scientifically proven. A study investigated two ...

Weighing in at 0.6 solar mass, HOPS-315 should someday grow to become a star much like our own sun; this makes it a promising ...

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

A newly discovered ice comet from deep space may be over 7 billion years old, making it the most ancient comet scientists have ever seen.

NASA telescopes in Chile have discovered a comet from interstellar space, making its closest approach in October.

Watch interstellar comet 3I/ATLAS live online tonight as it races toward the sun on a rare visit from beyond our solar system.

A mysterious object the size of Manhattan, originating from outside our Solar System, has been spotted by astronomers. Experts have confirmed the discovery of this rare interstellar visitor—only ...