| November 21 Ta Da! 1st Interstellar Asteroid | | | |
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| It's the 1st known interstellar asteroid | | It swept nearest the sun in September, then sped away again, back to interstellar space. Astronomers named it `Oumuamua. It's dark red, very elongated and unlike anything in our solar system. | | | What monarch butterflies prefer | | Will our survival strategy for monarchs work? Initiatives emphasize milkweed plantings along roadsides. New research shows egg-laying monarchs much prefer off-road farmlands. | | | | | There will be no EarthSky News on U.S. Thanksgiving Day (Thursday, November 23). | | | | | | | |
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| | | We sold out of these calendars quickly last year. Get yours now! P.S. They make great holiday gifts. | | | | | |
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| | | Come to know the Pleiades, or 7 Sisters | This image is from Krishnan Subramanian near Mumbai, India. It's from a star party earlier this month and shows a laser pointing toward the Pleiades. Krishnan wrote: "The Pleiades star cluster is called Krithika in India. The red streak on the left is that of an aircraft." | | | | |
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| | Fern, contrail shadow, singing dunes | Fern Zalin Jones wrote: "That is me, triumphant!" She's atop a dune at Kelso Dunes in California's Mojave Desert. See the contrail shadow in the background? Photo taken November 11, 2017 by Greg Lewis. | | |
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