When a total lunar eclipse occurs, the Earth projects all of its sunsets and sunrises onto the moon, as it traps the short wavelength blue light and lets pass the long wavelength red light, making the moon appear red and is often referred to as a "blood moon". Total solar eclipses only occur twice per year because of the Earth's tilt as well as the way the moons orbit interacts with the Earth's orbit as they do not orbit in lock step. Twice per year there are 2 points called "nodes" in which the...
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