NASA observes rare colossal cosmic event as galaxy clusters prepare for second collision

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More than 400 years ago, an astronomer first observes the Andromeda nebula in the telescope. Today, we know that it is a galaxy that flies towards the Milky Way with Karacho and could seal our future as a galactic fusion. When Frankish astronomer Simon Marius first directs his telescope on a foggy spot in the constellation Andromeda in 1612, he cannot yet imagine what he actually sees: Marius describes "shimmering rays that become all the bright…