Some additional items about the total solar eclipse over North America on August 21st (see earlier posting):

** Astro Maven Rick Boozer writes about how Weird Things Happen with a Total Solar Eclipse. For example:

Long before totality (when the Moon is only covering part of the Sun’s face), go to a nearby tree and look in the shade of the tree’s shadow.  You will see hundreds of crescent images of the partially covered Sun all over the ground!    In fact, this is a safe way to view all the partial phases of the eclipse without harming your eyes.  Where do all these many images come from?  The gaps between the tree’s leaves act like a pinhole camera by projecting the Sun’s image on the ground. 

** 2017 Total Solar Eclipse Science Briefing – video of NASA briefing on eclipse science:

During a June 21 media briefing from the Newseum in Washington, representatives from NASA, other federal agencies, and science organizations discussed the opportunity for scientific study offered by the total solar eclipse that will cross the U.S. on August 21.

** 2017 Total Solar Eclipse Safety Briefing – video of a NASA briefing on watching the eclipse safely

During a June 21 media briefing from the Newseum in Washington, representatives from NASA, other federal agencies, and science organizations provided important information about safely viewing the total solar eclipse that will cross the U.S. on August 21.