March 29 - A Galaxy Without Dark Matter

March 29 A Galaxy Without Dark Matter by:

Researchers find a galaxy without dark matter "It's so rare, particularly these days after so many years of Hubble, that you get an image of something and say, 'I've never seen that before.'" 2018's 2nd Blue Moon on March 31 Popular culture has defined several kinds of Blue Moons, but the one coming up March 31 is relatively rare. It's the 2nd Blue Moon this year. That hasn't happened since 1999 and won't again until 2037. Arctic winter sea ice extent 2nd lowest Sea ice in the Arctic grew to its annual maximum extent last week, and joined 2015, 2016 and 2017 as the 4 lowest maximum extents on record. Tonight … Summer Triangle, signpost for all seasons Vega, Deneb and Altair - the 3 brilliant stars of the Summer Triangle - are up before dawn in March.

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A galaxy without dark matter The ghostly galaxy NGC 1052-DF2 is exceedingly diffuse. See the distant galaxies behind it? The galaxy is missing most, if not all, of its dark matter. The Hubble Space Telescope's Advanced Camera for Surveys acquired this image, which is via NASA, ESA, and P. van Dokkum at Yale.

Where's the moon? Waxing gibbous The moon is now waxing Saturday's full Blue Moon. In the meantime, look for the moon from late afternoon until after midnight. Jenney Disimon caught today's moon - 94.2% illuminated - from Seoul, S. Korea. Submit your photo to EarthSky here! Did a friend forward EarthSkyNews to you? Click here to get your own subscription!

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