Researchers spent 5 years studying dust devils. They did it by placing 2-sided sticky tape on long pipes and running into dust devils. Hear their results and see cool images, here.
More dedication to science! This biologist stuck his arm into an eel tank - 10 times - to get an accurate measure of an eel's shock. He said it felt "like touching a horse fence."
A NASA spaceraft - OSIRIS-REx - bound for an asteroid will sweep in close to Earth on Friday. How to participate in a Wave to OSIRIS-REx campaign. Plus, how to see the craft in the sky and where to submit your images.
On Friday, the midday sun will be straight overhead seen from Earth's equator. It'll be crossing the equator, moving from north to south. Image by Tau’olunga via Wikimedia Commons.
Venus, Mars and Mercury were all occulted, or covered over, by the moon on September 18. Here is the daytime occultation of Mercury, caught from Hong Kong by Matthew Chin. See more photos or ... read more about the occultations. It was the first time since March 5, 2008, that 3 planets were occulted by the moon in less than a day. Next time: July 24, 2036.
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