The moon will blot out the sun for millions of people in a total solar eclipse, best seen from parts of Spain and Iceland. Noelia Noel, astrophysicist at the Un

The moon will blot out the sun for millions of people in a total solar eclipse, best seen from parts of Spain and Iceland. Noelia Noel, astrophysicist at the University of Surrey, explains what a solar eclipse is, where it will be visible, and what to expect [▻](https://video.twimg.com/amplify_vid…