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Icarus, whose official name is MACS J1149+2223 Lensed Star 1, is the farthest individual star ever seen. It is only visible because it is being magnified by the gravity of a massive galaxy cluster, located about 5 billion light-years from Earth. Called MACS J1149+2223, this cluster, shown at left, sits between Earth and the galaxy that contains the distant star. The panels at the right show the view in 2011, without Icarus visible, compared with the star's brightening in 2016. Credits: NASA, ESA, and P. Kelly (University of Minnesota)

Hubble uncovers the farthest star ever seen

More than most of the way over the universe, an enormous blue star nicknamed Icarus is the most remote individual star at any point...