Mystery as “alien” radio signal blips 2,000 times in past two months
Scientists believe the signals come from collapsed stars - but some have suggested they might be evidence of extraterrestrial civilisations
Super-Earths are bigger, more common and more habitable than Earth itself
Astronomers are discovering more of the billions they think are out there
Maybe the Universe thinks: Hear me out
The universe might think, the Big Bang might repeat, and copies of you might live in parallel worlds...