Centuries: 4th century - 5th century - 6th century
Decades: 420s 430s 440s 450s 460s - 470s - 480s 490s 500s 510s 520s
Years: 469 470 471 472 473 - 474 - 475 476 477 478 479
... light-years away from the centre of M82, around 12 million light-years from Earth. Astronomers have postulated that M82 would contain the first known mid-mass black ...
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