How does the Moon become a blood Moon?
A Blood Moon is the direct result of a Lunar Eclipse, when the Earth stands between the Moon and the Sun.
Often times, when the Earth is in this place, the light is blocked and the Moon can disappear entirely.
However during a Blood Moon eclipse, the light is simply filtered via the Earth’s atmosphere.
Space.com writes: “Some of the sunlight going through Earth’s atmosphere is bent around the edge of our planet and falls onto the moon’s surface.
“Earth’s air also scatters more shorter-wavelength light (in colours such as green or blue).
“What’s left is the longer-wavelength, redder end of the spectrum.”