Soubor:NGC 6946.jpg

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PopisNGC 6946.jpg	English: NGC 6946 is a medium-sized, face-on spiral galaxy about 22 million light years away from Earth. In the past century, eight supernovas have been observed to explode in the arms of this galaxy. Chandra observations (purple) have, in fact, revealed three of the oldest supernovas ever detected in X-rays, giving more credence to its nickname of the "Fireworks Galaxy." This composite image also includes optical data from the Gemini Observatory in red, yellow, and cyan. Image credit: X-ray: NASA/CXC/MSSL/R.Soria et al, Optical: AURA/Gemini OBs Español: NGC 6946 es una de tamaño mediano, cara-en galaxia espiral a unos 22 millones de años luz de la Tierra. En el siglo pasado, se han observado ocho supernovas a explotar en los brazos de esta galaxia. Observaciones de Chandra (púrpura) han, de hecho, reveló tres de las supernovas más antiguas jamás detectados en rayos-X, dando más crédito a su apodo de los "Fuegos artificiales de la galaxia." Esta imagen compuesta también incluye los datos ópticos del Observatorio Gemini en rojo, amarillo y cian. Crédito de la imagen: Radiografía: NASA / CXC / MSSL / R.Soria et al, Optical: AURA / Gemini OBs
Datum	16. ledna 2014, 12:26:50
Zdroj	http://www.nasa.gov/mission_pages/chandra/multimedia/fireworks-galaxy-ngc6946.html#.UteCAtIW1mN
Autor	NASA

	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."

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	Datum a čas	Náhled	Rozměry	Uživatel	Komentář
současná	16. 1. 2014, 17:17		3 000 × 3 000 (1,84 MB)	ArionStar	Cut. If you are wrong, please revert.
	16. 1. 2014, 08:59		3 600 × 3 600 (1,39 MB)	Ethically Yours	User created page with UploadWizard

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