File:Moon egret.jpg

No higher resolution available.

Moon_egret.jpg ‎(360 × 362 pixels, file size: 11 KB, MIME type: image/jpeg)

This is a file from the Wikimedia Commons. The description on its description page there is shown below.

Commons is a freely licensed media file repository. You can help.

Summary

DescriptionMoon egret.jpg	English: The Energetic Gamma Ray Experiment Telescope (EGRET) on the Compton Gamma Ray Observatory has detected gamma rays from the Moon as it passed through the instrument field of view several times between 1991 and 1994. The average flux, and the energy spectrum of the lunar gamma radiation are consistent with a model of gamma ray production by cosmic ray interactions with the lunar surface, and the flux varies as expected with the solar cycle. Although the same processes may occur on the Sun, EGRET does not detect the quiet Sun. Thus, in high-energy gamma rays, the Moon is brighter than the quiet Sun.
Date	9 June 2012
Source	ur=http://heasarc.gsfc.nasa.gov/docs/cgro/epo/news/gammoon.html.
Author	D. J. Thompson, D. L. Bertsch (NASA/GSFC), D. J. Morris (UNH), R. Mukherjee (NASA/GSFC/USRA)

	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."

The original description page was here. All following user names refer to en.wikipedia.

2005-04-30 09:30 Deglr6328 360×362× (11603 bytes) Image of the Moon as seen in [[Gamma rays]] by the EGRET instrument aboard the [[Compton gamma ray observatory]]. Produced by the collision of cosmic rays with the lunar surface the Moon is actually brighter than the quiet Sun in gamma rays. (the Sun was

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

	Date/Time	Thumbnail	Dimensions	User	Comment
current	20:57, 9 June 2012		360 × 362 (11 KB)	Marshallsumter

The following 23 pages use this file:

The following other wikis use this file:

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.

If the file has been modified from its original state, some details may not fully reflect the modified file.

JPEG file comment	Image generated by Ghostscript (device=ppmraw) CREATOR: XV Version 3.00 Rev: 3/30/93 Quality = 80, Smoothing = 20