On Sept. 21-22, a partial solar eclipse will see the moon sweep over the sun's disk, blocking its light over a swathe of the southern hemisphere! Here's what you can expect as the solar system alignment unfolds.
A partial solar eclipse takes place when the moon's orbit places the natural satellite directly between the Earth and sun during its monthly new moon phase, blocking our view of a portion — but not the totality of — the sun's disk.
