A total solar eclipse is coming to America on August 21, 2017. Find maps, videos, how to view, best places to go, eclipse glasses, and more.
This page is part of the NASA Eclipse Website. It uses Google Maps to create an interactive map of the <!-- *** #01 Total Solar Eclipse of xxxx --> Total Solar Eclipse of 2017 Aug 21 .
Short Answer Look for evidence that they're certified to meet the ISO 12312-2 international standard for safe direct viewing of the Sun.
This is NASA's official moon phases page.
PBS LearningMedia Video for Science for 3-8