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

Scientists have been able to recreate the extreme conditions found on icy moons in deep space—and revealed the unstable ...

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 ...

"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 ...

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

The future of our solar system has long captivated both scientists and stargazers alike. As highlighted in a recent Live ...

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

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

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