This inverted solar portrait was captured during the waning partial phase, as the moon slipped left to right off the sun's disk in the wake of the eclipse maximum. The following hour would see the ...

Solar eclipses only occur at the New Moon phase of the lunar cycle (a series of eight unique phases of the moon's visibility) ...

Here's what you need to know to make the most of the partial solar eclipse on Sept. 21, as the moon takes a 'bite' out of the sun.

Watch the Sept. 21 partial solar eclipse live online with this handy livestream. Coverage begins at 2 p.m. EDT (1800 GMT).

The moon will appear to take a "bite" out of the sun during a deep partial solar eclipse on Sept. 21.