Be prepared for the big event in April.

The nation waits for the return of a rare, must-see event.

For those who will be witnessing totality during the Great American Eclipse on Monday, you’re in for a real treat: not only will you see the sun completely blocked by the new moon -- so long as it’s not cloudy -- but it will get eerily dark. Birds may become confused or stop flying. And if you know where to look, you may even be able to spot a hidden planet.