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SN2014J - the nearest supernova for 10 years!

Posted: 24 Jan 2014

A supernova has exploded in the nearby galaxy M82, aka the 'cigar galaxy', and should get bright enough to be visible with binoculars. This supernova, already given the identifier SN2014J (the 10th supernova confirmed in 2014), is a "type 1a" supernova, which we believe are caused by exploding white dwarf stars. Type 1a's explode with very predictable brightnesses, making them ideal 'standard candles' to measure distances to galaxies accurately. These type of supernovae are the cornerstone of the relatively recent discovery that the Universe's expansion is actually accelerating, contrary to previous models.