Rosetta's target comet is a surprise double space rock

July 16, 2014 12:01 PM

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(Image: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA)

Comet-chaser Rosetta has lucked out with a two-for-one deal. Pictures from the European Space Agency (ESA) probe suggest that its target comet, Churyumov-Gerasimenko, is actually two icy rocks stuck together in an arrangement known as a contact binary.

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