Summarium

تصوير فنان لتجربة النسبية العامة. [1] archive copy at the Wayback Machine

	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.[2] 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. [3] Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [4] 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."

Image courtesy of NASA/JPL-Caltech

License [5] archive copy at the Wayback Machine:

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.