APOD: 2020 August 24 – Crescent Moon HDR
Crescent Moon HDR
Image Credit & Copyright: Miguel Claro (TWAN, Dark Sky Alqueva)
Explanation: How come the crescent Moon doesn't look like this? For one reason, because your eyes can't simultaneously discern bright and dark regions like this. Called earthshine or the da Vinci glow, the unlit part of a crescent Moon is visible but usually hard to see because it is much dimmer than the sunlit arc. In our digital age, however, the differences in brightness can be artificially reduced. The featured image is actually a digital composite of 15 short exposures of the bright crescent, and 14 longer exposures of the dim remainder. The origin of the da Vinci glow, as explained by Leonardo da Vinci about 510 years ago, is sunlight reflected first by the Earth to the Moon, and then back from the Moon to the Earth.
Israel strikes Iran, defense officials confirm A senior US official also
confirmed the attack, stating that "We were not surprised." By YONAH JEREMY
BOB, TZVI JOFFRE, ZVIKA KLEIN APRIL 19, 2024 03:52 Updated: APRIL 19, 2024
14:39
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https://www.jpost.com/breaking-news/article-797866 *Attack on Iran next to
nuclear site sends message: We could have done worse here - analysis* The
messag...
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