File:Spitzer Eyes Comet ISON.jpg
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DescriptionSpitzer Eyes Comet ISON.jpg |
English: These images from NASA's Spitzer Space Telescope of C/2012 S1 (Comet ISON) were taken on June 13, when ISON was 310 million miles (about 500 million kilometers) from the sun. The images were taken with the telescope's infrared array camera at two different near-infrared wavelengths, 3.6 and 4.5 microns (the representational colors shown were selected to enhance visibility). The 3.6-micron image on the left shows a tail of fine rocky dust issuing from the comet and blown back by the pressure of sunlight as the comet speeds towards the sun (the tail points away from the sun). The image on the right side shows the 4.5-micron image with the 3.6-micron image information (dust) removed, and reveals a very different round structure -- the first detection of a neutral gas atmosphere surrounding ISON. In this case, it is most likely created by carbon dioxide that is “fizzing” from the surface of the comet at a rate of about 2.2 million pounds (1 million kilograms) a day.
Comet ISON (officially known as C/2012 S1) is, like all comets, a dirty snowball made up of dust and frozen gases like water, ammonia, methane and carbon dioxide -- some of the fundamental building blocks that scientists believe led to the formation of the planets 4.5 billion years ago. ISON will pass within 724,000 miles (1.2 million kilometers) of the sun on Nov. 28, making it a sungrazer comet that will evaporate its ices and even its rocky dust near perihelion, revealing even more of the comet’s composition. NASA is bringing to bear a vast fleet of spacecraft, instruments, and space- and Earth-based telescopes to study this rarely-seen type of comet over the next year. ISON stands for International Scientific Optical Network, a group of observatories in ten countries who have organized to detect, monitor, and track objects in space. ISON is managed by the Keldysh Institute of Applied Mathematics, part of the Russian Academy of Sciences. The complete list of observers is: C.M. Lisse, R.J. Vervack, and H.A. Weaver, Johns Hopkins University Applied Physics Laboratory; J.M. Bauer, Jet Propulsion Laboratory/Caltech; Y.R. Fernandez, University of Central Florida; M.S.P. Kelley, University of Maryland; M.M. Knight, Lowell Observatory; D. Hines, Space Telescope Science Institute; J-Y Li, Planetary Science Institute; W. Reach, USRA/SOFIA; M. L. Sitko, University of Cincinnati; P. A. Yanamandra-Fisher, SSI; K.J. Meech and J. Rayner, University of Hawaii. |
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Source | http://www.nasa.gov/mission_pages/spitzer/multimedia/pia17251.html (alt) |
Author | NASA/JPL-Caltech/JHUAPL/UCF |
This image or video was catalogued by Jet Propulsion Laboratory of the United States National Aeronautics and Space Administration (NASA) under Photo ID: PIA17251. This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing. Other languages:
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Licensing[edit]
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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.) | ||
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current | 22:36, 26 July 2013 | 1,210 × 788 (386 KB) | Stas1995 (talk | contribs) | User created page with UploadWizard |
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- File:Spitzer June 13 View of ISON (10998651805).jpg (file redirect)
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Orientation | Normal |
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Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Adobe Photoshop CS3 Windows |
File change date and time | 09:42, 23 July 2013 |
Color space | sRGB |
Image width | 1,210 px |
Image height | 788 px |
Date and time of digitizing | 02:42, 23 July 2013 |
Date metadata was last modified | 02:42, 23 July 2013 |