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[personal profile] mmcirvin
http://www.jpl.nasa.gov/news/news.cfm?release=2011-213

This is the inside of the big south-polar crater. Now I can't tell whether the grooves that seemed to be visible in lower-resolution photos were just a trick of the light.

Date: 2011-07-19 01:09 am (UTC)
From: [identity profile] mmcirvin.livejournal.com
...Phil Plait points out that they look more like scarps now.

Date: 2011-07-19 09:29 pm (UTC)
From: [identity profile] acw.livejournal.com
I'm not sure I can see what you call "the big south-polar crater". There are a lot of craters in the image, but the big feature in the middle on the terminator is an outie rather than an innie.

Date: 2011-07-20 01:42 am (UTC)
From: [identity profile] mmcirvin.livejournal.com
The whole image is covered by the crater.

Date: 2011-07-20 02:55 am (UTC)
From: [identity profile] mmcirvin.livejournal.com
...To give a better idea, here's an elevation map from the Hubble telescope:

http://en.wikipedia.org/wiki/File:Vesta-Elevation.jpg

The recent closeup pictures are looking right at the lump in the middle of that crater covering the whole southern hemisphere. Since it's a crater on a convex object, it doesn't actually look all that concave.

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