Star which survived explosions for 60 years explodes again
US-based astronomers have spotted a "zombie star" that survived multiple explosions since 1954 and exploded again in 2014. The supernova explosion was discovered as it shone with the brightness of about two billion Suns for almost two years. Supernovae have been considered singular events, but "it's the first time we've seen multiple explosions in the same place," said an astronomer.