FILE PHOTO: A combination of 10 pictures shows the progression of a partial solar eclipse as a jet plane flies by the total solar eclipse in Guernsey, Wyoming, United States, on August 21, 2017. REUTERS/Rick Wilking/File Photo WASHINGTON --- The moon will completely blot out the sun for millions of people in North America along a path crossing from Mexico into the United States and then Canada in a total solar eclipse occurring on April 8. Here is an explanation of the solar eclipse and where it will be visible. What is a total solar eclipse? In a total solar eclipse, the moon passes between the sun and Earth, entirely covering the face of the sun along a small path of our ...Keep on reading: What you need to know about the April total solar eclipse