Earth's Horizon Postcard
Keyboardor Enter for slideshow
(Escape to close)
Earth's Horizon Postcard
Share
Share to undefined
This site doesn't allow you to add a textual message.
Social media post image preview
Quick help
Article not found
This image of "the setting sun and the thin blue airglow line at Earth's horizon were captured in this image photographed by an STS-121 crewmember aboard the Space Shuttle Discovery" in July 2006.
Quick help
Article not found
6/5/2009