March 11 - How to Weigh a Galaxy

March 11 How to Weigh a Galaxy by:

How Hubble and Gaia weighed the Milky Way Scientists used the measured velocities of 44 globular star clusters to measure the mass of our home galaxy, the Milky Way. Read more. How can I see a green flash? It's said that once you've seen a green flash, you'll never go wrong in matters of the heart. Here's all you need to know to be able to see one, plus great pics!  Thousands of tiny ice quakes shake Antarctica at night Stay overnight on an Antarctic ice shelf, and you might feel the shaking from thousands of tiny quakes as the ice re-forms after melting during the day. Read more.

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Tonight … Moon and Mars are close Mars alternates years in appearing bright or faint in our sky. 2018 was an excellent year for Mars. 2019 is one of the off years. The red planet now appears as a modestly-bright ruddy "star." Watch for it near tonight's moon. Read more.

Young moon over soccer, Monterrey, Mexico Raul Cortes used his mobile phone to catch the young waxing crescent moon over a soccer game Saturday night. It was the Monterrey Rayados vs Monterrey Tigres! He didn't mention who won. Thanks, Raul! More details. Submit your photo to EarthSky here! Did a friend forward EarthSkyNews to you? Click here to get your own subscription!

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