In just a few hours, sky-gazers in North America will be treated to a total solar eclipse that will briefly turn day into night for tens of millions of people from Mexico to Canada. Monday's eclipse ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Sky-gazers across ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Sky-gazers across ...

It's almost time for a total eclipse of the sun. Tennesseans across the state have a chance to catch a (safe) glimpse of this celestial phenomenon this afternoon. And while the state isn't in the path ...