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

Astronomers are tracking a newly spotted comet, named 3I/ATLAS, hailing from parts unknown. It is only the third time such an ...

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

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

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

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

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

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

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

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