5
A great circle, also known as an orthodrome or Riemannian circle, of a sphere is the intersection of the sphere and a plane which passes through the center point of the sphere.
Added 3/27/2015 7:49:16 AM
This answer has been confirmed as correct and helpful.
Confirmed by
sujaysen [3/27/2015 10:29:31 AM]
5
A solar eclipse is a type of eclipse that occurs when the Moon passes between the Sun and Earth, and the Moon fully or partially blocks ("occults") the Sun.
Added 3/27/2015 7:50:28 AM
This answer has been confirmed as correct and helpful.
Confirmed by
sujaysen [3/27/2015 10:30:23 AM]