On Friday, November 19, 2021 those in North America, South America, Australia and East Asia will see the full Moon turn red.
However, it won’t go completely red. In fact, during the event only 97% of the Moon will enter Earth’s shadow in space, leaving a tiny portion still illuminated by the Sun.
A total lunar eclipse occurs when a full Moon passes through Earth’s shadow in space. Each month the New Moon passes roughly between the Earth and the Sun and then orbits to the other side of Earth to the Sun to become a full Moon.