What's happening on Aug. 21, 2017, and what can people potentially see?

What's happening on Aug. 21, 2017, and what can people potentially see? 08/11/2017 01:08 PM EDT We asked NSFs Division of Astronomical Sciences Program Director David Boboltz whats happening on August 21, and what can people potentially see. This is an NSF Multimedia Gallery item.   Follow NSF:  This email was sent using GovDelivery Communications Cloud on behalf of: National Science Foundation Update · 4201 Wilson Boulevard · Arlington, VA 22230 · 703-292-5111