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.

The Sept. 21-22 partial solar eclipse will be visible to over 16 million people observing from a number of Pacific islands, along with parts of Australia and Antarctica, according to Time and Date. The rest of the world will be able to follow along via Time and Date's livestream, which will be hosted on Space.com, providing live views and expert commen

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