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| The unique elephant brain | | | Today is World Elephant Day. Here's a look at how unique brain structures – different from those of any other mammal – are responsible for elephants' special abilities in learning and memory. | | | | | Jupiter's moon Ganymede has powerful chorus waves | | Chorus waves can be converted to sound. The ones around Earth sound like singing or chirping birds. Jupiter has stronger chorus waves, and now its large moon – Ganymede – has been found to have chorus waves a million times stronger than Jupiter's. | | | Want to trick your ears? | | You’ll enjoy this video of audio illusions from the guys at AsapSCIENCE. Can you understand the talking piano? | | | | | |
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| I LOVE METEOR SHOWERS SALE! | | All of our meteor shower gear is 15% off this weekend. Your support means the world to us and allows us to keep going.
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|  | | Perseids are peaking this weekend | Earth in space, encountering the Perseid meteors in 2018. This graphic – via Guy Ottewell – is described more fully in this article. | | | | | |
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 | | Potomac River sunrise | | An early August morning in Mt. Vernon, Virginia. Photographer Greg Diesel-Walck wrote, "Glorious beams at sunrise over the Potomac River." | | |
