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You are browsing the archive for 2014 July 02.

2 July 2014

Arthur’s Ripples

  You may need to click on the image above to really see the ripples across the top of Arthur, so do that first, before I tell you why they are there. You are looking at gravity waves, but a better way of understanding it is to compare it to the ripples you see after you throw a rock into a still pond. The rock disturbs the water and makes …

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