For the second time in 2022, stargazers will have the opportunity to view a total lunar eclipse on Nov. 8. At least a portion of the phenomenon will be visible throughout eastern Asia, Australia, the Pacific, and North America. The previous total lunar eclipse happened in May.

According to Alphonse Sterling, astrophysicist from NASA’s Marshall Space Flight Center in Huntsville, Alabama, total lunar eclipses occur approximately once every 1.5 years on average. While the Moon has been providing generous eclipse viewing opportunities this year, viewers should take advantage of November’s eclipse because the next total lunar eclipse will not occur until 2025.

A total lunar eclipse occurs when Earth casts a complete shadow – called an umbra – over the Moon. Earth’s shadow is categorized into two parts: the umbra, the innermost part of the shadow where direct light from the Sun is completely blocked, and the penumbra, the outermost part of the shadow where the light is partially blocked.

During a total lunar eclipse, the Moon and the Sun are on opposite sides of Earth. Many people wonder why lunar eclipses don’t happen every month given the Moon completes an orbit around Earth every 27 days. The reason is because the Moon’s orbit around Earth is tilted relative to Earth’s orbit around the Sun, so the Moon often passes above or below Earth’s shadow. Lunar eclipses are only possible when the orbits align so that the Moon is directly behind Earth relative to the Sun.

Read more at NASA

Photo Credit: Steve FUNG via Wikimedia Commons