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Unformatted text preview: locally on February 20, 2008 . Mercury Extra Credit 1. Caloris is the huge impact basin now fully revealed by Messenger; it is comparable to the state of Alaska in size, and about 20% larger than suspected from the Mariner X data. 2. The oddest smaller crater in this basin is nicknamed the "the Spider ", based on the unusual lines radiating from it. 3. I personally like the image called “Counting Mercury’s Craters”, because of the fact that it is the first image of a side of Mercury that no one has ever seen before. The surface in this particular picture really seems very smooth with the exceptions of the craters, and it makes me want to touch it....
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- Spring '08
- Astronomy, Impact crater, Amanda Ferencz AST3033, Hubble Movie Questions