Summary

Description Universal gravitational mass.PNG	English: An apple experiences gravitational fields directed towards every part of the Earth; however, the sum total of these many fields produces a single powerful gravitational field directed towards the Earth’s center of gravity.
Date	1 November 2009, 04:58 (UTC)
Source	The Earth seen from Apollo 17 with white background.jpg
Author	The Earth seen from Apollo 17 with white background.jpg : created by NASA derivative work: Unitfreak ( talk )
Other versions

This is a retouched picture , which means that it has been digitally altered from its original version. Modifications: added apples arrows & 2nd earth . The original can be viewed here: The Earth seen from Apollo 17 with white background.jpg : .

Licensing

	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."

Original upload log

This image is a derivative work of the following images:

• File:The Earth seen from Apollo 17 with white background.jpg licensed with PD-USGov-NASA
  • 2006-03-16T08:08:27Z Lefrancq 2790x2776 (4613084 Bytes) Photo "The_Earth_seen_from_Apollo_17.jpg" on white background. See the original to have a complete description.

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