Is there a massive undiscovered planet on the outer reaches of the solar system? The idea has been around since before the ...

Learn about cryovolcanism, which shapes the surface of icy moons in the outer Solar System by releasing water that ...

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

Is alien invasion armageddon coming for us in November? That's the speculation set off by a legitimate academic study ...

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

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

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

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

AROOSTOOK COUNTY, Maine (WAGM) - Aroostook County’s iconic Maine Solar System Model is about to get even bigger. Two new ...

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

CAPE CANAVERAL, Fla. (AP) — Astronomers have discovered the earliest seeds of rocky planets forming in the gas around a baby sun-like star, providing a precious peek into the dawn of our own solar ...