By Bryan Gaensler
If you’ve been paying attention, you know that on Aug. 21, we’re in for a special cosmic treat: the Great American Eclipse of 2017.
The moon’s shadow will track a 4,000-kilometre course across the continental United States from coast to coast, beginning with Depoe Bay, Ore., and end after 93 minutes in McClellanville, S.C.. As a result, tens of millions of Americans will be treated to that rarest of natural wonders: a total eclipse of the sun.