File:The Illusion of a Continuous Perseus Arm (2021-061).png
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Captions
Captions
In a map of the Milky Way, the neighboring spiral arm just beyond the Sun is known as the Perseus arm.
Summary
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| Description |
English: In a map of the Milky Way, the neighboring spiral arm just beyond the Sun is known as the Perseus arm. Astronomers created this map by measuring the locations of natural radio sources known as masers (pink dots in pullouts at right) and dust clouds (blue dots). At upper right, a shaded region shows the previously believed shape of the Perseus arm, demarcated by a combination of masers and dust clouds. New measurements (middle right) show that some of these dust clouds are much closer or farther from the Sun than originally thought. As a result, the Perseus arm may be much clumpier and less well-defined (lower right). |
| Date | 16 December 2021 (upload date) |
| Source | The Illusion of a Continuous Perseus Arm |
| Author | SCIENCE: Joshua Peek (STScI) ILLUSTRATION: Robert L. Hurt (Caltech, IPAC), Leah Hustak (STScI) |
Licensing
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This file is in the public domain because it was created by NASA and ESA. NASA Hubble material (and ESA Hubble material prior to 2009) is copyright-free and may be freely used as in the public domain without fee, on the condition that only NASA, STScI, and/or ESA is credited as the source of the material. This license does not apply if ESA material created after 2008 or source material from other organizations is in use. The material was created for NASA by Space Telescope Science Institute under Contract NAS5-26555, or for ESA by the Hubble European Space Agency Information Centre. Copyright statement at hubblesite.org or 2008 copyright statement at spacetelescope.org. For material created by the European Space Agency on the spacetelescope.org site since 2009, use the {{ESA-Hubble}} tag. |
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| current | 13:21, 14 August 2023 | | 3,840 × 2,486 (6.6 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://stsci-opo.org/STScI-01FPJ7G96N1ART6HXR1TCE54QC.png via Commons:Spacemedia |
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