Based on the composition of gases spewed by the icy space rock, researchers estimate that our guest might be up to 12 billion ...

The Solar System is far more diverse in size than it appears from Earth. From tiny rocky worlds to massive gas giants, each ...

Strange interstellar comet speculated to be alien spacecraft is older than Solar System - Scientists say comet represents ...

Based on evidence collected by the James Webb Space Telescope, researchers have found that interstellar comet 3I/ATLAS could ...

While life on Mars (and Venus) has long been an obsession for those wondering if we're alone, there are other places in our ...

Exactly where the comet 3I/ATLAS came from within the Milky Way remains a mystery.

The hunt for Planet Nine continues as new discoveries make the Solar System’s biggest mystery even harder to solve. Is there ...

A rare meteorite has revealed evidence of a massive lost world that once orbited the young Sun before being destroyed in a catastrophic collision. The discovery suggests some early planets formed from ...

Unlike conventional solar systems, which are hampered by the sun’s fluctuations and require backup systems to even them out, ...