Prepare for a total solar eclipse
Tuesday, November 13, 2012 - 07:01
in Astronomy & Space
(Phys.org)—Tomorrow's total solar eclipse will only be visible in its entirety to ground-based observers watching from northern Australia, but ESA's Sun-watching Proba-2 satellite will have a ringside seat from its orbit around Earth. During a total solar eclipse the Moon moves in front of the Sun as seen from Earth, their separation and alignment such that the Moon appears large enough to temporarily block out the Sun's light.