File:Massive Smash-Up at Vega.jpg

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إسماعيل البزيدي تك توك

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Description
English: This artist concept illustrates how a massive collision of objects, perhaps as large as the planet Pluto, smashed together to create the dust ring around the nearby star Vega. New observations from NASA's Spitzer Space Telescope indicate the collision took place within the last one million years. Astronomers think that embryonic planets smashed together, shattered into pieces, and repeatedly crashed into other fragments to create ever finer debris. In the image, a collision is seen between massive objects that measured up to 2,000 kilometers (about 1,200 miles) in diameter. Scientists say the big collision initiated subsequent collisions that created dust particles around the star that were a few microns in size. Vega's intense light blew these fine particles to larger distances from the star, and also warmed them to emit heat radiation that can be detected by Spitzer's infrared detectors
Date
Source http://planetquest.jpl.nasa.gov/image/26
Author NASA/JPL-Caltech/T. Pyle (SSC)

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Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
Warnings:
This file, which was originally posted to http://planetquest.jpl.nasa.gov/image/26, was reviewed on 15 March 2016 by reviewer Shizhao, who confirmed that it was available there under the stated license on that date.

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current11:09, 26 January 2013Thumbnail for version as of 11:09, 26 January 20133,000 × 2,400 (2.17 MB)Stas1995 (talk | contribs)User created page with UploadWizard

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