Why can the moon eclipse the sun on occasion? 1. sometimes they line up in a straight line. 2. the moon apears about the same size of the sun 3. the moon and sun both have an angular diameter of ½ de

Why can the moon eclipse the sun on occasion? 1. sometimes they line up in a straight line. 2. the moon apears about the same size of the sun 3. the moon and sun both have an angular diameter of ½ degree 4. when the sun is farthest from the Earth, it is small enough to be eclipsed