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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.
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Description |
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 centre.
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Date |
2009-11-01 04:58 (UTC) |
Source |
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Author |
- derivative work: Unitfreak ( talk)
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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.
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Licensing
I, the copyright holder of this work, hereby publish it under the following license:
Public domainPublic domainfalsefalse |
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This file is in the public domain 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.) |
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Warnings:
- Use of NASA logos, insignia and emblems are restricted per US 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. 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.
- Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted.
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File usage
The following pages on Schools Wikipedia link to this image (list may be incomplete):
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