In our Issue #6, science writer, David Lynch gave us a great preview of the coming total eclipse that can be seen across the country in August (go tohttp://messengermountainnews.com/e-issues/ and scroll down to Issue #6, page 16)
If you haven’t taken a moment to read it, be sure you do, for this is no ordinary eclipse–in fact the United States Postal Service is issuing an unusual commemorative stamp for the event. Talk about going all science geek on us! For the first time ever, this stamp will be printed with thermochromic ink, which allows two images to exist on the stamp at the same time. By rubbing the image, the ink reacts with your body heat to reveal the image underneath–the Moon–and when it cools back it shows the eclipse itself.
You can read more about the stamp here: http://www.localnews8.com/news/eclipse/usps-to-issue-commemorative-stamp-for-2017-eclipse/466737263
The stamp will be issued June 20, on the date of the summer solstice.