The total solar eclipse happens Aug. 21 - but the U.S. Postal Service is issuing a new stamp today to mark the occasion.
The stamp is a first-of-its-kind - when you touch it, the heat from your finger will transform the solar eclipse image into one of the moon.
Starting today, the pane of 16 stamps will be available at post office facilities nationwide.
"With the release of these amazing stamps using thermochromic ink, we've provided an opportunity for people to experience their own personal solar eclipse every time they touch the stamps," Jim Cochrane, the USPS' chief customer and marketing officer, said in a news release.
"As evidenced by this stamp and other amazing innovations, the Postal Service is enabling a new generation to bridge the gap and tighten the connection between physical mail and the digital world."
A total eclipse of the sun is rare - and lasts less than three minutes.
On Aug. 21, the 70-mile wide path - where the moon's passing between the earth and the sun will block the sun totally from being seen from earth - will cross through Mid-Missouri.
The U.S. mainland hasn't experienced a total eclipse since 1979, and 1918 was the last time the path of the moon's shadow on the earth crossed the entire United States.
The new stamp image shows a photograph taken in Libya in 2006 by a retired NASA astrophysicist, Fred Espenak, of Portal, Arizona.
He's considered by many to be the world's leading authority on total solar eclipses, having witnessed 27 of them around the world.
"I'm honored to have my images on this unique stamp," he said in the news release. "But more importantly, the stamp will spread the news about America's great eclipse to many more people than I could ever reach."
More information on solar eclipse safety, educational and science information is available online at eclipse2017.nasa.gov.
The stamp is part of the USPS' "Forever" series - it will be good for 1-ounce first-class postage whenever it's used, even if the price of stamps has changed between now and the time the customer uses it.