67P reveals recipe for a comet

Take two smaller comets and add a cosmic smashup

TWO FOR ONE  The two lobes of comet 67P, seen in this August 2014 image from the Rosetta spacecraft, probably came from two different comets, a new study suggests.

MPS for OSIRIS Team/Rosetta/ESA, MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA

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