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ScienceCasts: Some Comets Like It Hot

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Visit http://science.nasa.gov/science-news/science-at-nasa/2012/12jan_cometlovejoy/ for more. Astronomers are still scratching their heads over Comet Lovejoy, which plunged through the atmosphere of the sun in December and, against all odds, survived. The comet is now receding into the outer solar system leaving many mysteries behind.
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Visit http://science.nasa.gov/ for more! On July 5th, a comet dove into the sun and disintegrated.  New footage just released by NASA shows the final stages of the comet's death plunge.
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Visit http://science.nasa.gov/ for breaking science news. Astronomers are keeping a close eye on a newly-discovered Comet ISON, which could become visible in broad daylight later this year when it skims through the atmosphere of the sun.
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Visit http://science.nasa.gov/ for breaking science news. Comet Pan-STARRS has survived its encounter with the sun and is now emerging from twilight in the sunset skies of the northern hemisphere. A NASA spacecraft monitoring the comet has beamed back pictures of a wild and ragged tail.
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Visit http://science.nasa.gov/ for breaking science news. A comet falling in from the distant reaches of the solar system could become a naked-eye object in early March. This is Comet Pan-STARRS's first visit to the inner solar system, so surprises are possible as its virgin ices are exposed to intense solar heating.
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For more, visit http://science.nasa.gov/science-news/science-at-nasa/2013/24sep_ison2/ To learn how you can help, visit isoncampaign.org Comet ISON is still more than two months away from its spectacular close encounter with the sun. Already, the brightening comet has become a good target for backyard telescopes in the pre-dawn sky. Amateur Astronomer Image Credits: 0:11 - Nirmal Paul, Canary Island, Teide, 09/16/2013 0:31 - Nick Howes & Ernesto Guido, Liverpool Telescope, 05/02/2013 (Credited as an annotation. Apologies for the original credit omission) 0:37 - Knut Schaeffner, Verclause, France, 09/14/2013 0:48 - Theodoros Giaourtsis, Vrastama Halkidikis, Greece, 09/08/2013 0:54 - Pete Lawrence, Selsey UK, 09/15/2013 1:06 - Efrain Morales Rivera, Aguadilla, Puerto Rico, 09/15/2013 1:25 - Christina, SLOOHs Robotic Observatory, Canary Islands, 08/29/2013 2:08 - Waldemar, Skorupa, Provence France, 09/05/2013 3:02 - Rolando Ligustri, Talmassons (UD) IT, MPC235, 09/07/2013 3:14 - Maximilian Teodorescu, Dumitrana (Ilfov), Romania, 09/07/2013 3:38 - Roy and Jodi McCullough, Salem, Ohio, 09/04/2013
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To observe how winds move high in Earth's atmosphere, scientists sometimes release clouds of barium as tracers to track how the material corkscrews and sweeps around � but scientists have no similar technique to study the turbulent atmosphere of the sun. So researchers were excited in December 2011, when Comet Lovejoy swept right through the sun's corona with its long tail streaming behind it. NASA's Solar Dynamics Observatory (SDO) captured images of the comet, showing how its long tail was buffeted by systems around the sun, offering scientists a unique way of observing movement as if they'd orchestrated the experiment themselves. Since comet tails have ionized gases, they are also affected by the sun's magnetic field, and can act as tracers of the complex magnetic system higher up in the atmosphere. Comets can also aid in the study of coronal mass ejections and the solar wind. This video is public domain and can be downloaded at: http://svs.gsfc.nasa.gov/vis/a010000/a011100/a011158/ Like our videos? Subscribe to NASA's Goddard Shorts HD podcast: http://svs.gsfc.nasa.gov/vis/iTunes/f0004_index.html Or find NASA Goddard Space Flight Center on Facebook: http://www.facebook.com/NASA.GSFC Or find us on Twitter: http://twitter.com/NASAGoddard