northanger (northanger) wrote,

Sunspot #890

SUNSPOT WATCH: ( ~ The Sun has a rash—and it's getting worse. Small sunspots are popping up everywhere. The latest is active region 890, the second new sunspot in as many days. What's next?

 • SEC Solar Region Summary

DA VINCI GLOW: ( ~ Look west at the sunset tonight, behold the crescent Moon, and think of Leonardo Da Vinci. Almost 500 years ago, the Renaissance master solved an ancient mystery: What is that strange glow between the horns of the crescent? The mysterious glow, Da Vinci realized, is sunlight reflected from Earth onto the Moon: diagram. Now we call it "Earthshine" or better yet the "Da Vinci glow." Bask in it tonight: sky map. more images: from Richard Bell of Kalamazoo, Michigan; from P-M Hedén of Vallentuna, Sweden; from Dennis Mammana of Borrego Springs, California. see: Da Vinci's sketch of Earthshine in 1510 vs. amateur astronomer Riccardo Di Nasso's photo of Earthshine in 2006.

Tags: da vinci, spaceweather, sunspot

  • My tweets

    Sat, 15:46: whoa #earthquake

  • My tweets

    Fri, 19:46: RT @ OrangeCoSheriff: MIYA MARCANO UPDATE: Armando Manuel Caballero, 27, person of interest in Miya Marcano's disappearance was…

  • My tweets

    Fri, 12:03: Stay safe, Great Tree. Fri, 16:15: “It is a truth universally acknowledged, that a single man in…

  • Post a new comment


    Anonymous comments are disabled in this journal

    default userpic

    Your reply will be screened