The universe is vast and teeming with stars – but if intelligent life exists, it may not be able to visit Earth.

Astronomers are baffled by 3I/ATLAS, a newly discovered interstellar object that appears to be defying the basic laws of celestial motion. Instead of drifting naturally through space, the mysterious ...

Alien civilisations may have just been given a 400,000-fold boost in their chances of finding humans, according to a new ...