File:Milky Way 2005.jpg

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Original file(1,350 × 1,350 pixels, file size: 955 KB, MIME type: image/jpeg)

Summary[edit]

Refresh file.svg
This file has been superseded by File:Artist’s impression of the Milky Way.jpg. It is recommended to use the other file. Please note that deleting superseded images requires consent.
new file
Description

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.

Date
Source NASA/JPL (http://www.nasa.gov/mission_pages/spitzer/multimedia/20080603a.html)
Author R. Hurt
Permission
(Reusing this file)

Created by NASA; public domain

Other versions

Derivative works of this file:

Licensing[edit]

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.)
NASA logo.svg
Dialog-warning.svg
Warnings:

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current21:55, 19 April 2014Thumbnail for version as of 21:55, 19 April 20141,350 × 1,350 (955 KB)SenseiAC (talk | contribs)different image = different name. The "newer" one will therefore be moved to "Milky Way 2008"
20:47, 4 June 2008Thumbnail for version as of 20:47, 4 June 20085,600 × 5,600 (4.35 MB)Ashill (talk | contribs){{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
08:01, 16 September 2005Thumbnail for version as of 08:01, 16 September 20051,350 × 1,350 (955 KB)Shizhao (talk | contribs)Barred Spiral Milky Way Illustration Credit: R. Hurt (SSC), JPL-Caltech, NASA From http://apod.gsfc.nasa.gov/apod/ap050825.html {{PD-USGov-NASA}}
  • You cannot overwrite this file.

File usage on other wikis