Oct 21 - Europa's Spiky Surface

October 21 Europa's Spiky Surface by:

Ice spikes - aka penitentes - in the Central Andes of Argentina. Similar ice spikes could exist on the surface of Jupiter's moon Europa, at its equatorial latitudes. Image via Arvaki/Wikipedia. Good morning! Europa may have towering ice spikes on its surface Penitentes - large pointed spikes of ice - are known on Earth and Pluto. Jupiter's moon Europa might have them, too, according to new research. If they're there, they could make a future landing on Europa tricky. Read more. Small asteroid passes closer than TV satellites Asteroid 2018 UA made an extremely close approach to Earth Friday morning. Luckily, the space rock was too small to be dangerous. Read more. How Earth feeds volcanic supereruptions To figure out where magma gathers in Earth’s crust and for how long, researchers traveled to the planet's most active cluster: the Taupo Volcanic Zone of New Zealand, site of some of the biggest eruptions of the last 2 million years. Read more and watch a video. Image via Vanderbilt University.

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Tonight … Watch Capella flashing red and green A bright star twinkling with red and green flashes, low in the northeastern sky on October evenings, is probably Capella. This photo is from our friend Scott MacNeill of Frosty Drew Observatory in Rhode Island.

Light pillars over Whitefish Bay, Wisconsin When there are ice crystals in the air around you, you might see light pillars. They're the result of light reflecting from the crystals suspended in the air or clouds. Vincent Brady Nocturnal Photography caught these last Tuesday morning. Read more. Submit your photo to EarthSky here! Did a friend forward EarthSkyNews to you? Click here to get your own subscription!

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