Provenance
NASA Terms of Use
For all non-private uses, NASA's Terms Of Use are as follows:
The imagery is free of licensing fees
NASA requires that they be provided a credit as the owners of the imagery
Visible Earth Addendum
Beyond the NASA Terms, the Visible Earth team requests, but does not require:
The Visible Earth be provided a credit as the location that the imagery was found at
A URL be provided, either to the Visible Earth http://visibleearth.nasa.gov/ or to the page providing the link to the used image.

Reuse
This item is offered under a Creative Commons Attribution-NonCommercial-ShareAlike license http://creativecommons.org/licenses/by-nc-sa/3.0/ You may reuse this item for non-commercial purposes as long as you provide attribution and offer any derivative works under a similar license.