Media Credits
The audio, illustrations, photos, and videos are credited beneath the media asset, except for promotional images, which generally link to another page that contains the media credit. The Rights Holder for media is the person or group credited.
Photograph courtesy Johnson Space Center via NASA Earth Observatory
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Media
Some media assets (videos, photos, audio recordings and PDFs) can be downloaded and used outside the National Geographic website according to the Terms of Service. If a media asset is downloadable, a download button appears in the lower right hand corner (
) of the media viewer. If no button appears, you cannot download or save the media.
Text
Text on this page is printable and can be used according to our Terms of Service.
Interactives
Any interactives on this page can only be played while you are visiting our website. You cannot download interactives.