Is it a vessel from a distant civilisation or simply a cosmic snowball on a lonely journey? As the interstellar object known ...

An interstellar visitor is speeding through the solar system, and within weeks, astronomers hope to learn whether it's a natural wanderer or something far more extraordinary. The ...

Some eagle-eyed astronomers have predicted an alien spaceship could be on its way to Earth, with new colour-enhanced images showing a green glowing interstellar object ...