On Monday, April 8, the United States will experience a total solar eclipse — a rare astronomical event where the moon passes directly between the sun and the Earth, blocking out the sun’s light almost completely. The last total solar eclipse in the contiguous U.S. was in 2017, and the next one won’t be until 2044. If the weather cooperates, people across the United States — from northeastern Maine to southwestern Texas — will be able to observe the eclipse using protective eyewear. Those in the path of totality, where…