All About Space

Intergalac­tic highway

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This composite shows a galaxy cluster known as the Northern Clump, around 690 million light years away. Scientists have recently discovered that this cluster is ‘hitching a ride’ on a colossal strip of hot gas that stretches for at least 50 million light years. The clump is moving towards two other clusters, Abell 3391 and Abell 3395, which are not shown in this image. The filaments of gas between the clusters are acting like intergalac­tic highways, chauffeuri­ng the clusters through the cosmos before they eventually collide.

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