X-ray satellites have collected data on the merging of two galaxy clusters, and the resulting computations are mind-breaking.
Sign up for our email newsletter for the latest science newsopens a window on the largest astronomical event in the known universe: the merging of two galaxy clusters. It finds that during the galactic crunch, just one side exerts as much energy as a billion suns burn in a year – and does so every second.
To study the event, they drew upon observations from Suzaku, a Japanese X-ray astronomy satellite. The clouds of high-temperature gas inside each cluster emit X-rays and allowed the team to map out the collision. As such, the gas had already heated itself to about 72 million degrees Fahrenheit inside the clusters and to about 108 million F within the bridge. As part of the superheated collision, immense shock waves had formed coming from each direction, and the team set about estimating their size and power.
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