File:Mira the star-by Nasa alt crop.jpg

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This is a featured picture, which means that members of the community have identified it as one of the finest images on the English Wikipedia, adding significantly to its accompanying article. If you have a different image of similar quality, be sure to upload it using the proper free license tag, add it to a relevant article, and nominate it.

This image was selected as picture of the day on the English Wikipedia for March 13, 2008.

Summary

DescriptionMira the star-by Nasa alt crop.jpg	Mira A is a red giant variable star in the constellation Cetus. This ultraviolet-wavelength image mosaic, taken by NASA's GALEX, shows a comet-like "tail" stretching 13 light year across space. The "tail" consists of hydrogen gas blown off of the star, with the material at the furthest end of the "tail" having been emitted about 30,000 years ago. The tail-like configuration of the emitted material appears to result from Mira's uncommonly high speed (about 130 km/s (81 mi/s)) relative to the Milky Way galaxy's ambient gas. Mira itself is seen as a small white dot inside a blue bulb.
Date	Unknown date?
Source	http://www.galex.caltech.edu/MEDIA/2007-04/images.html
Author	NASA
Permission (Reusing this file)	See below
Other versions	Original

Recogntion


	This is a featured picture on the English language Wikipedia (Featured pictures) and is considered one of the finest images. See its nomination here. If you think this file should be featured on Wikimedia Commons as well, feel free to nominate it. If you have an image of similar quality that can be published under a suitable copyright license, be sure to upload it, tag it, and nominate it.

Licensing

	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: Use of NASA logos, insignia and emblems is restricted per U.S. law 14 CFR 1221. The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain. Materials based on Hubble Space Telescope data may be copyrighted if they are not explicitly produced by the STScI.[1] See also {{PD-Hubble}} and {{Cc-Hubble}}. The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2] Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3] The National Space Science Data Center (NSSDC) site has been known to host copyrighted content. Its photo gallery FAQ states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."

Other information

This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: cropped and rotated from Image:Mira the star-by Nasa.jpg.

File history

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	04:44, 13 March 2008		2,824 × 750 (239 KB)	Emesee	{{Information \|Description= \|Source=http://en.wikipedia.org/wiki/Image:Mira_the_star-by_Nasa_alt_crop.jpg \|Date= \|Author= \|Permission= \|other_versions= }}

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Metadata

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Orientation	Normal
Horizontal resolution	150 dpi
Vertical resolution	150 dpi
Software used	Adobe Photoshop 7.0
File change date and time	21:30, 31 October 2007
Color space	Uncalibrated

File:Mira the star-by Nasa alt crop.jpg

Contents

Summary

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Licensing

Other information

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copyright status

public domain

File history

File usage

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Metadata