His colleague said: "I was trying to help him and he pointed his baton towards the attacker and said 'get him'. Even when injured, he was trying to fight."

British astronomers have used the Hubble space telescope to find a group of nine massive stars 30m times brighter than the sun.

A HUGE star drifting through a neighbouring galaxy may be the heaviest star ever discovered — hundreds of times more massive than the sun, scientists said yesterday after working out its weight for the first time.

Astronomers have discovered “monster” stars – whose size and brightness exceed what many scientists thought was possible.