File:WISE full sky.jpg
![File:WISE full sky.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/d/d5/WISE_full_sky.jpg/800px-WISE_full_sky.jpg?20130302221648)
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[edit]DescriptionWISE full sky.jpg |
English: Original caption:
This is a mosaic of the images covering the entire sky as observed by the Wide-field Infrared Survey Explorer (WISE), part of its All-Sky Data Release. The sky can be thought of as a sphere that surrounds us in three dimensions. To make a map of the sky, astronomers project it into two dimensions. Many different methods can be used to project a spherical surface into a 2-D map. The projection used in this image of the sky, called Aitoff, takes the 3-D sky sphere and slices open one hemisphere, and then flattens the whole thing out into an oval shape. In the mosaic, the Milky Way Galaxy runs horizontally across this map. The Milky Way is shaped like a disk and our solar system is located in that disk about two-thirds of the way out from the center. So we see the Milky Way as a band running through the sky. As we look toward the center of the galaxy, we are looking through more of the disk than when we are looking at large angles away from the center, and you can see a noticeable increase in stars (colored blue-green) toward the center of the image. There are some artifacts worth noting in the image. For the image atlas, moving objects such as asteroids and comets were removed. However, some slower moving, bright objects did leave behind residuals. Residuals of the planets Saturn, Mars, and Jupiter are visible in this image as bright red spots off the plane of the Galaxy at the 1:00, 2:00 and 7:00 positions, respectively. In addition, at several locations in the image there are small rectangular shaped features that result from the difficulty in matching background levels of individual atlas frames. Three of the four wavelengths surveyed by WISE were used to create this image. The colors used in this image represent specific wavelengths of infrared light. Cyan (blue-green) represents light emitted predominantly from stars and galaxies at a wavelength of 3.4 microns. Green and red represent light mostly emitted by dust at 12 and 22 microns, respectively. |
Date | 14 March 2012 (released by NASA) |
Source | http://photojournal.jpl.nasa.gov/catalog/PIA15481 |
Author | NASA/JPL-Caltech/UCLA |
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This image or video was catalogued by Jet Propulsion Laboratory of the United States National Aeronautics and Space Administration (NASA) under Photo ID: PIA15481. 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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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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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 22:16, 2 March 2013 | ![]() | 10,000 × 5,030 (6.51 MB) | Huntster (talk | contribs) | Original full size image. |
08:35, 17 March 2012 | ![]() | 5,500 × 2,767 (17.86 MB) | Pieter Kuiper (talk | contribs) | ||
08:34, 17 March 2012 | ![]() | 5,500 × 2,767 (17.86 MB) | Pieter Kuiper (talk | contribs) |
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