An active comet
An active comet
This recording of the OSIRIS camera shows the spot (marked with a red circle) on Comet 67P/Churyumov-Gerasimenko, where the massive gas eruption occurred on 29 July 2015.
Credit:
ESA/Rosetta/MPS for OSIRIS Team/MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA.