These cosmic blasts outshine supernovas and no one knows what they are
by Ellsworth Toohey from Boing Boing on (#779RQ)

Sky surveys keep catching a kind of cosmic explosion that astronomers can't explain. They call them fast blue optical transients, or FBOTs: blasts as luminous as a supernova, or brighter, but flaring and fading far faster, and glowing a distinctive blue. - Read the rest
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