Comet goosebumps
![](https://cdn.sci.esa.int/documents/34878/35534/1567215773910-ESA_Rosetta_67P_OSIRIS_NAC_goosebumps_ab_625.jpg)
Date: 21 January 2015
Satellite: Rosetta
Depicts: Comet 67P/Churyumov-Gerasimenko
Copyright: See below
Close-ups of a curious surface texture nicknamed 'goosebumps'. The characteristic scale of all the bumps seen on Comet 67P/Churyumov-Gerasimenko by the OSIRIS narrow-angle camera is approximately 3 m, extending over regions greater than 100 m. They are seen on very steep slopes and on exposed cliff faces, but their formation mechanism is yet to be explained.
Credit: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA
Last Update: 1 September 2019