Photos of the last full moon of the year and decade

Photographers around the world are sharing their pics of the last full moon of 2020 and this decade, which occurred on December 29 or 30, depending on your location. Source: https://earthsky.org/todays-image/photos-of-the-last-full-moon-of-the-year-and-decade…

Personal solstices

Photos from EarthSky community members around the world, showing what the December solstice – bringing winter to half of Earth, and summer to the other half – means to them. Thanks to all of you for sharing these evocative images with us! Source: https://earthsky.org/todays-image/personal-solstices-photos-dec-earthsky-community…

See the moon’s shadow on Earth from the 2020 total solar eclipse in these stunning satellite views

Skywatchers in southern South America were treated to a total solar eclipse on Monday (Dec. 14), and a weather satellite captured stunning views of the event from space. Source: https://www.livescience.com/total-solar-eclipse-2020-moon-shadow-earth-satellite-video.html

Scientists use NASA data to predict appearance of December 14, 2020 eclipse

On Dec. 14, 2020, the Moon’s shadow raced across Chile and Argentina, casting a thin ribbon of land into brief, mid-day darkness. Source: https://phys.org/news/2020-12-scientists-nasa-december-eclipse.html…

Is that a UFO?! There’s probably an explanation

Most Unidentified Flying Objects aren’t actually unidentified. Here’s a list of phenomena, either natural or human-made, that people often mistake for UFOs. Source: https://earthsky.org/space/if-its-not-a-ufo-what-is-it…

The moon’s shadow on Earth yesterday

During a total solar eclipse, the moon’s shadow sweeps across Earth. Those in the shadow’s path see the total eclipse. Those outside the path of the shadow may see varying stages of a partial eclipse. Source: https://earthsky.org/todays-image/photo-moon-shadow-total-eclipse-dec14-2020-goes-east…

South American total solar eclipse December 14

The new moon moves smack-dab in front of the sun on December 14, 2020, to present this year’s one and only total eclipse of the sun. Source: https://earthsky.org/astronomy-essentials/south-american-total-solar-eclipse-december-14…

Does Digital Advertising Actually Work?

“This week’s Freakonomics podcast goes into depth at asking if digital advertising actually works,” writes Slashdot reader Thelasko:
Economist Steve Tadelis [a professor at U.C. Berkeley’s business school] was interested in answering that question while working for eBay. So, when eBay, in planning to renegotiate their deal with Bing, turned off their brand-keyword advertising, it created a natural experiment. TADELIS: “We could…

A magnified view of Jupiter and Saturn at conjunction

On December 21, 2020, Jupiter and Saturn will be only 1/5 of a moon-diameter apart! Guy Ottewell offers insights and charts showing a magnified (telescopic) view of their once-in-20-years great conjunction. Source: https://earthsky.org/astronomy-essentials/jupiter-saturn-conjunction-telescopic-magnified-dec-2020…