A 1st-of-its-kind stamp that changes when you touch it, commemorating the August 21, 2017 total solar eclipse. Fred Espenak - whose photos are on the new stamp - tells the story.
This checklist - from eclipse master Fred Espenak - will help you plan the perfect total solar eclipse experience! Do your homework and the only other thing you’ll need is perfect weather on August 21!
Solar eclipses aren't exclusive to Earth, but eclipses viewed from our planet have few rivals in the solar system. A word about Earth's solar eclipses, and what eclipses would be like on other planets, here.
Shadow bands are elusive ripples of alternate light and dark, flitting over the ground or the sides of buildings during a total solar eclipse. How to take part in an International Shadow Band Campaign during the August 21 eclipse.
Not traveling to the centerline of the eclipse? Expect NASA images via 11 spacecraft, at least 3 aircraft, more than 50 high-altitude balloons, and the International Space Station.