ObsessoMom wrote:In my non-expert opinion, the GIF that shows some bright spots continuing to shine after that part of Ceres has rotated into shadow suggests phosphorescence.
Or a plume that reaches well above the surface.
I recollected there was a suggestion of a plume from Herschel telescope images from 2014. So I did a search and also found this, which I did not remember, and which suggests a plume, from Dawn in March 2015. Note especially:
"The question is whether Ceres has an active surface or not," said Dr Nathues, the camera team leader from the Max Planck Institute for Solar System Research.
"Interestingly, this feature is located in a crater of 80km diameter... you can see that feature when the rim is very likely in front of the line of sight."
Seeing the feature when the rim should be in the foreground suggests considerable height above surface.
Ceres is leaking!