Size of this preview: 800 × 540 pixels. Other resolutions: 320 × 216 pixels | 640 × 432 pixels | 1,024 × 691 pixels | 1,280 × 864 pixels | 2,500 × 1,688 pixels.
Original file (2,500 × 1,688 pixels, file size: 1.94 MB, MIME type: image/jpeg)
 | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
| Description |
English: In this illustration, one photon (violet) carries a million times the energy of another (yellow). Some theorists predict travel delays for higher-energy photons, which interact more strongly with the proposed frothy nature of space-time. Yet Fermi data on two photons from a gamma-ray burst fail to show this effect, eliminating some approaches to a new theory of gravity. The animation link below shows the delay scientists had expected to observe. Credit: NASA/Sonoma State University/Aurore Simonnet |
| Date | 2009-10-2009 |
| Source |
https://www.flickr.com/photos/gsfc/4058451581 also at: https://www.nasa.gov/images/content/397296main_GRB_photon_race_full.jpg |
| Author | NASA Goddard Space Flight Center, NASA/Sonoma State University/Aurore Simonnet |
| Permission (Reusing this file) |
  This file is licensed under the Creative Commons Attribution 2.0 Generic license.
|
Licensing
This file is licensed under the Creative Commons Attribution 2.0 Generic license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
|
This image, originally posted to Flickr, was reviewed on 14:16, 22 February 2017 (UTC) by the administrator or reviewer ww2censor, who confirmed that it was available on Flickr under the stated license on that date. |
|
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:
|
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 10:22, 22 February 2017 | | 2,500 × 1,688 (1.94 MB) | Popcrate | {{Information |Description ={{en|1=In this illustration, one photon (purple) carries a million times the energy of another (yellow). Some theorists predict travel delays for higher-energy photons, which interact more strongly with the proposed froth... |
File usage
No pages on the English Wikipedia use this file (pages on other projects are not listed).
Global file usage
The following other wikis use this file:
- Usage on bn.wikipedia.org
- Usage on it.wikipedia.org
- Usage on sr.wikipedia.org
