» Astronomy Pic of the Day: Comet CG Evaporates

Where do comet tails come from? There are no obvious places on the nuclei of comets from which the jets that create comet tails emanate. One of the best images of emerging jets is shown in the featured picture, taken in 2015 by ESA's robotic Rosetta spacecraft that orbited Comet 67P/Churyumov-Gerasimenko (Comet CG) from 2014 to 2016. The picture shows plumes of gas and dust escaping numerous places from Comet CG's nucleus as it neared the Sun and heated up. The comet has two prominent lobes, the larger one spanning about 4 kilometers, and a smaller 2.5-kilometer lobe connected by a narrow neck. Analyses indicate that evaporation must be taking place well inside the comet's surface to create the jets of dust and ice that we see emitted through the surface. Comet CG (also known as Comet 67P) loses in jets about a meter of radius during each of its 6.44-year orbits around the Sun, a rate at which will completely destroy the comet in only thousands of years. In 2016, Rosetta's mission ended with a controlled impact onto Comet CG's surface.



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Jan 26, 2020 - 8:22 AM - by newsbot
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The Legend of Zelda Manga, an RTX 2080 TI and a noise hair trimmer, all on sale in this unique weekend of deals.

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Jan 26, 2020 - 8:22 AM - by newsbot
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According to Chinese astrology, 2020 is the Year of the Rat. Whatís even more important, this little creature is also the first among all 12 Zodiac Animals. It means this year can truly be a special one, filled with new beginnings. Letís make it even more unique with our special gaming horoscope based on your Animal Zodiac sign!

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Crew and XP bonuses plus a Gold discount on Crew specialization!
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The feisty Tier VIII light tank is available for a limited time!
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Jan 26, 2020 - 8:22 AM - by newsbot
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Why Not Games programmer and designer Nikhil Murthy analyses the role-playing of 4X games. ...


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At GDC 2017 UX designer Celia Hodent discusses the UX challenges of retention and how to use cognitive science and the scientific method to make your game enjoyable and engaging in the long term. ...
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Jan 26, 2020 - 8:22 AM - by newsbot
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Jan 26, 2020 - 8:22 AM - by newsbot
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Uncharted Movie Release Date Pushed Back

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Release: Commandos 2 - HD Remaster

Jan 26, 2020 - 8:22 AM - by newsbot
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Relive the real-time tactics masterpiece that defined the genre. Commandos 2 - HD Remaster is now available on GOG.COM thanks to the efforts of Kalypso Media Digital. Take control of an elite group of commandos who must venture deep into enemy territory and utilize their combined expertise to complete a series of notoriously demanding missions set in WW2.

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