Space.com |
Color-Changing US Stamp Will Herald 2017 Total Solar Eclipse
Space.com 21, a newly released U.S. stamp will change when pressed with a finger — a photo of the moon materializing over the blotted-out sun. The photographs come courtesy of astrophysicist Fred Espenak, who has seen 20 solar eclipses, including one on every … Stamps change with heat to create total eclipse of the mail Breaking: New solar eclipse stamp does something no other stamp can The Postal Service is releasing special Total Solar Eclipse Forever stamps |
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