Topics

Astronomy and Astrophysics
Don't believe the light: Supernova in 'Einstein Cross' is a cosmic trick
Don't believe the light: Supernova in 'Einstein Cross' is a cosmic trick

An exploding star goes supernova only once – but if you’re really, really lucky, you might just get to see it happen four times. An international team has discovered four separate images of the same distant supernova arranged in the shape of a cross – and this unusual trick of the light could help scientists test the structure of the cosmos. The formation of the four supernova images, in the shape of the Einstein Cross, had been predicted half a century ago by Sjur Refsdal, the late Norwegian astrophysicist and a pioneer in gravitational lensing, and the new supernova is named in his honor.   While Refsdal did not live to see the discovery of this Einstein Cross,...

Loading