Carmen_Sandiego said:
The banding on those “cliff faces” at the top of the image look interesting.
Indeed.
> New Navcam mosaic from Rosetta of the Imhotep region of Comet 67P/Churyumov-Gerasimenko as seen from a distance of 19.9 km from the comet centre on 28 March 2015.
(or taken a week before an released on 28 Mar, I’m not sure). They had a lot of troubles during the close flyby. The star-tracker camera kept mistaking flecks of dust coming off the comet for stars. Couple that with non-functioning gyroscopes and Rosetta swerved so far off target that it’s high beam antenna no longer pointed at Earth. It took a lot of effort to bring Rosetta back to correct orientation, but nothing was lost.
No doubt some of the Rosetta crew are kicking themselves for not foreseeing this and figuring out how to automatically avoid the problem of comet dust interfering with the star tracker. Too late now, though I think. And that means that, because the comet will be generating more dust as it approaches the Sun, this could easily be the closest image of it that we ever get. Let’s hope not.