| | Composite image, showing the size of comet Wirtanen’s extended atmosphere, compared with the size of a full moon on our sky’s dome. The comet’s brightness is spread over this large area. That’s why it’s so tough to see. Image via Brian D. Ottum (@astropicsdaily on Instagram). | | |
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Watch geckos race on water! | | Geckos are renowned for their acrobatic feats on land and in the air. Turns out they can also run on water. Watch video. A gecko racing across the water supported by paddling and surface tension. Image via Pauline Jennings/PolyPEDAL Lab, UC Berkeley | | |