A total lunar eclipse is a relatively rare astronomical event because the moon usually passes above or below Earth’s shadow in the sky due to the tilt of its orbit. But once or twice a year the heavens literally align and the moon moves directly into that region of space.

During a partial lunar eclipse, Earth’s shadow appears to take a bite of the moon. The full moon is covered during a total eclipse and blushes coppery red because of stray bits of sunlight filtering through Earth’s atmosphere.

If you plan to stay up to watch the total lunar eclipse on Thursday, you won't need to do much to prepare like for a solar eclipse. Here's why.