Wondering why there's hardly any moon visible in the sky tonight? That's because of where we are in the lunar cycle, a series of eight unique phases of the moon's visibility. The whole cycle takes about 29.5 days, according to NASA , and these different phases happen as the Sun lights up different parts of the moon whilst it orbits Earth.

What is today’s moon phase?

As of Saturday, Sept. 20, the moon phase is Waning Crescent, and it is only 2% lit up to us on Earth, according to NASA's Daily Moon Observation .

Visibility is too low, so there's nothing to see on the moon's surface tonight.

When is the next full moon?

The next full moon will be on Oct. 6. The last full moon was on Sept. 7.

What are moon phases?

According to NASA , moon phases are caused by the 29.5-day cycle

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