Nasa’s Voyager 1 probe will reach a historic distance of one light-day from Earth in 2026. This milestone means radio signals ...

A mysterious object that a controversial scientist claims could be an alien battleship reaches its closest point to Earth on Friday.

The vast majority of matter is dark – invisible until it is detected only through its gravitational effects. The newly discovered object could be a clump of dark matter, or it could also be a compact, ...

As interstellar object 3I/ATLAS swept past Earth on 19 December 2025, viral theories claimed cosmic indifference or alien intent. Here is what happened and why astronomers were watching so closely.