Datoteka:Milky Way 2005.jpg

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Caption from NASA: Like early explorers mapping the continents of our globe, astronomers are busy charting the spiral structure of our galaxy, the Milky Way. Using infrared images from NASA's Spitzer Space Telescope, scientists have discovered that the Milky Way's elegant spiral structure is dominated by just two arms wrapping off the ends of a central bar of stars. Previously, our galaxy was thought to possess four major arms.

This artist's concept illustrates the new view of the Milky Way, along with other findings presented at the 212th American Astronomical Society meeting in St. Louis, Mo. The galaxy's two major arms (Scutum-Centaurus and Perseus) can be seen attached to the ends of a thick central bar, while the two now-demoted minor arms (Norma and Sagittarius) are less distinct and located between the major arms. The major arms consist of the highest densities of both young and old stars; the minor arms are primarily filled with gas and pockets of star-forming activity.

The artist's concept also includes a new spiral arm, called the "Far-3 kiloparsec arm," discovered via a radio-telescope survey of gas in the Milky Way. This arm is shorter than the two major arms and lies along the bar of the galaxy.

Our sun lies near a small, partial arm called the Orion Arm, or Orion Spur, located between the Sagittarius and Perseus arms.
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Izvor NASA/JPL (http://www.nasa.gov/mission_pages/spitzer/multimedia/20080603a.html)
Autor R. Hurt
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Created by NASA; public domain
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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.)
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3 juni 2008

vrsta medija na Internetu Serbian (Latin script)

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Datum/vrijemeMinijaturaDimenzijeKorisnikKomentar
aktualna23:55, 19 april 2014Minijatura verzije (23:55, 19 april 2014)1.350 × 1.350 (955 kB)SenseiACdifferent image = different name. The "newer" one will therefore be moved to "Milky Way 2008"
22:47, 4 juni 2008Minijatura verzije (22:47, 4 juni 2008)5.600 × 5.600 (4,35 MB)Ashill{{Information |Description= Like early explorers mapping the continents of our globe, astronomers are busy charting the spiral structure of our galaxy, the Milky Way. Using infrared images from NASA's Spitzer Space Telescope, scientists have discovered th
10:01, 16 septembar 2005Minijatura verzije (10:01, 16 septembar 2005)1.350 × 1.350 (955 kB)ShizhaoBarred Spiral Milky Way Illustration Credit: R. Hurt (SSC), JPL-Caltech, NASA From http://apod.gsfc.nasa.gov/apod/ap050825.html {{PD-USGov-NASA}}

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