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Space
Space
Science
Robert Lea

How black-hole-powered quasars killed off neighboring galaxies in the early universe

A dark grey bar of smoke with a bright blue halo against a dark blue background.

Astronomers have used the wide-field view of the Dark Energy Camera to confirm that supermassive-black-hole-powered quasars in the early universe were packed into dense neighborhoods. However, it seems these cosmic beasts weren't exactly the best neighbors.

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