Nasa satellites detected an explosion two billion lightyears away which lit up the galaxy.
Satellites captured images of how the gamma blast lit up dust rings in spaceScientists have revealed how Nasa satellites detected the brightest ever gamma ray explosion in space.Images of the rare and powerful cosmic phenomenon show a halo and "bullseye" like shapes.
"By studying the evolution of this astonishingly bright GRB in great detail, we can learn a lot about the physics of a blast wave. However 55 minutes later, when the satellite's orbit allowed it to have a clear view of the GRB, its systems successfully detected it and created images of it.Gamma ray bursts are the most violent explosions in the universe, releasing more energy than the Sun would in 10 billion years.
"The brightness of this GRB means that we can collect much better data than normal, and so move beyond simple models of the GRB physics that we normally use - they just can't explain these data."Dr Evans added: "Even after 18 years of operation, Swift can still surprise us with something unexpected, awesome, and scientifically powerful, and it can still challenge us.
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