Pan-STARRS Finds a "Lost" Supernova
7 Mar 2013, 19:08 UTC
March 07, 2013: The star Eta Carinae is ready to blow. 170 years ago, this 100-solar-mass object belched out several suns' worth of gas in an eruption that made it the second-brightest star after Sirius. That was just a precursor to the main event, since it will eventually go supernova.
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