A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

For decades, Uranus baffled scientists because it seemed to have no internal heat. Now, new computer modeling shows the ...

Astronomers around the world have confirmed over 6,000 exoplanets, a milestone reached in September 2025. Billions more are ...

The methane gas may constitute a rarefied atmosphere, or it may come from erupting plumes on Makemake’s surface.