Two galaxy clusters in collision
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(NASA. LARGE FORMAT. DEEP SPACE) Several hundred million years ago, two galaxy clusters collided and then passed through each other. This powerful event released a stream of hot gas from each galaxy cluster that formed an unusual bridge between the two objects. This bridge is now being battered by particles being chased by a supermassive black hole. Clusters of galaxies are the largest objects in the universe held together by gravity. They contain hundreds or thousands of galaxies, large amounts of gas at millions of degrees that glow in X-rays, and huge reservoirs of invisible dark matter.Vintage chromogenic print. Legend on the back label. 40,6 x 40,6cm with margins.
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