The final full moon of the summer will occur this weekend. But for some lucky stargazers, the moon will take on a striking red color thanks to a total lunar eclipse.

Here's what to know about September's total lunar eclipse and full moon.

What is a blood moon?

Total lunar eclipses are commonly referred to as "blood moons" due to the moon's reddish hues during the event.

According to NASA , the Earth lines up between the sun and the moon during a total lunar eclipse. When this happens, the moon is completely enveloped by the Earth's shadow, with the only sunlight able to reach the moon's surface coming from the edges of the Earth. Air molecules in Earth's atmosphere scatter most of the blue light, causing the remaining light to reflect onto the moon with a red glow.

When is the next

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