Image Use Policy
Most materials published on the Earth Observatory, including images, are freely available for re-publication or re-use, including commercial purposes, except for where copyright is indicated. In those cases you must obtain the copyright holder’s permission; we usually provide links to the organization that holds the copyright.
We ask that NASA’s Earth Observatory be given credit for its original materials; the only mandatory credit is NASA.
For more information about using NASA imagery visit http://www.nasa.gov/audience/formedia/features/MP_Photo_Guidelines.html.