Solar System

Passing stars may have altered Earth's orbit, and its climate, many times throughout cosmic history. New research digs into what that means when it comes to understanding our planet's past.

The researchers who originally proposed the Planet Nine hypothesis have narrowed down where the giant elusive world might be hiding, after carrying out an exhaustive sweep of the theoretical planet's orbital pathway.

The International Astronomical Union has confirmed the existence of three currently unnamed moons — one around Uranus and two orbiting Neptune.

Earth's closest cosmic companions, known as 'minimoons' or 'quasi-moons', could hold the secrets to the history of our early solar system.

As humans start to spread out among the solar system, new accents may begin to emerge in isolated colonies. But why does this happen and what will these new accents sound like?

Team "pro-exomoon" is back to defend the discovery of the first and only exomoons potentially seen by humanity.

New images from the James Webb Space Telescope have revealed a bizarre string of dust in the shape of a cat's tail around the nearby juvenile star Beta Pictoris.

Bright spots that appear and vanish on Saturn's moon Titan have a seemingly simple explanation — they're floating chunks of frozen organic material.

The surface of Venus is a hellscape with temperatures hot enough to melt lead, but some regions of its atmosphere high over the surface remain cool enough to harbor ice and birth ghostly clouds.

In our favorite space image of the week, NASA's Juno spacecraft got an unprecedented look at Jupiter's volcanic moon Io from just 930 miles away.