This Week @NASA.

At the Newseum in Washington, we teamed with representatives from other federal agencies and science organizations to delve into the science behind the upcoming August 21 total solar eclipse, and provide details on how to safely view the once-in-a-century phenomenon. During the eclipse, 14 states across the U.S. will experience more than two minutes of darkness – while those elsewhere will have a partial eclipse. Meanwhile a new eclipse Forever stamp, unveiled by the U.S. Postal service changes between images of an eclipse and the moon – with the touch of a finger. The eclipse and moon images were taken by a retired NASA astrophysicist. Also, Kepler Catalog Includes New Planet Candidates, Lightfoot Meets with International Partners, and Roll-Out Solar Array Test!