Hubble spots double quasars in merging galaxies

Hubble spots double quasars in merging galaxies
NASA’s Hubble Space Telescope is “seeing double.” Peering back 10 billion years into the universe’s past, Hubble astronomers found a pair of quasars that are so close to each other they look like a single object in ground-based telescopic photos, but not in Hubble’s crisp view.
phys.org
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