A total eclipse happens somewhere on Earth about every 18 months.
However, the last time a total eclipse traversed the entire continental United States from coast to coast was 99 years ago.
It’s called the Great Eclipse because of it’s accessibility. About 14 million people live in the path of totality as it traverses the United States on August 21st. People are flying in from all over the world from scientists to eclipse enthusiasts to just plain curious folk.
It’s also thought it will cause some of the worst traffic conditions ever. They are saying arrive early and leave late after the eclipse.