NASA | Why are We Seeing So Many Sungrazing Comets?
- Uploaded by BadAstro on Jul 27, 2013
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Before 1979, there were less than a dozen known sungrazing comets. As of December 2012, we know of 2,500. Why did this number increase? With solar observatories like SOHO, STEREO, and SDO, we have not only better means of viewing the sun, but also the comets that approach it. SOHO allows us to see smaller, fainter comets closer to the sun than we have ever been able to see before. Even though many of these comets do not survive their journey past the sun, they survive long enough to be observed, and be added to our record of sungrazing comets. Join the search at: http://sungrazer.nrl.navy.milThis video is public domain and can be downloaded at: http://svs.gsfc.nasa.gov/goto?11156Like our videos? Subscribe to NASA's Goddard Shorts HD podcast:http://svs.gsfc.nasa.gov/vis/iTunes/f0004_index.htmlOr find NASA Goddard Space Flight Center on Facebook:http://www.facebook.com/NASA.GSFCOr find us on Twitter:http://twitter.com/NASAGoddard