A total lunar eclipse will occur across the country early on Tuesday, astronomers say. 🌙 The eclipse will last nearly 1 1/2 hours. A lunar eclipse occurs when the Sun, Earth and Moon align, so the Moon passes into the Earth's shadow. When the Moon is within the Earth's shadow, or umbra, it turns an eerie reddish hue, a blood moon. November's full moon is traditionally known as the Beaver Moon, according to Space.com, because beavers are preparing for winter. Accordingly, this month's sky show is known as the Beaver Moon eclipse. Click the link in @usatoday’s bio for a look at where and when the moon will travel during the eclipse.