Each of the four yellow dots is a separate image of Supernova Refsdal, which lies behind the bright blob of a galaxy cluster in the centre of the picture. Credit: NASA / ESA / P Kelly Each of the four ...

Many a puzzled British housewife waited anxiously last week for the world to blow to pieces. As these matrons sat in their comfortable homes, a quiet voice from the radio had told them that the ...

PARIS: An immensely powerful flash detected earlier this year was created by a massive star exploding when the universe was just five percent of its current age, astronomers said on Tuesday. The flash ...