A mysterious radio signal from a distant planet has sparked excitement among astronomers, hinting at the tantalizing possibility of extraterrestrial life.

These mysterious objects can have masses several million or billion times that of the Sun and are so dense that they warp space time around them. As far as astronomers know, all galaxies harbour a ...

Telescopes around the world have spotted a monster radio jet streaming from a quasar dating back to the first 1 billion years ...