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Michio Kaku
New Earth-like planet discovered | Science
Artist's impression of the inner four planets of the Gliese 581 system and their host star, a red dwarf only 20 light years from Earth.
Stellar-Mass Black Hole This artist's impression shows a binary system containing a stellar-mass black hole called IGR J17091-3624, or IGR J17091 for short. The strong gravity of the black hole, on the left, is pulling gas away from a companion star on the right.