Checked content


Artist's concept of general relativity experiment.

Public domain 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.)
NASA logo.svg
  • 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.

Image courtesy of NASA/JPL-Caltech

License :

By electing to download the material from this web site the user agrees:

  1. that Caltech makes no representations or warranties with respect to ownership of copyrights in the images, and does not represent others who may claim to be authors or owners of copyright of any of the images, and makes no warranties as to the quality of the images. Caltech shall not be responsible for any loss or expenses resulting from the use of the images, and you release and hold Caltech harmless from all liability arising from such use.
  2. to use a credit line in connection with images. Unless otherwise noted in the caption information for an image, the credit line should be "Courtesy NASA/JPL-Caltech."
  3. that the endorsement of any product or service by Caltech, JPL or NASA must not be claimed or implied.
The following pages on Schools Wikipedia link to this image (list may be incomplete):

Wikipedia for Schools...

Wikipedia for Schools is designed to make learning fun and easy. SOS Children cares for children who have lost their parents. Our Children's Villages give these children a new home and a new family, while a high-quality education and the best of medical care ensures they will grow up with all they need to succeed in adult life. There are many ways to help with SOS Childrens Villages.