nimeilun

Nimeilun is a term that refers to a specific type of lunar eclipse, characterized by the Moon passing through the Earth's umbra, the central and darkest part of the Earth's shadow. During a nimeilun, the Moon does not completely disappear from view, unlike a total lunar eclipse. Instead, it takes on a reddish or coppery hue, often referred to as a "blood moon." This coloration occurs because some of the sunlight passing through the Earth's atmosphere is refracted onto the Moon's surface, with shorter wavelengths (blue and green) scattered out and longer wavelengths (red and orange) reaching the Moon.

Nimeilun is a fascinating astronomical event that provides valuable insights into the Earth's atmosphere and the mechanics of lunar eclipses. It is a relatively rare occurrence, happening only during a full moon when the Sun, Earth, and Moon are aligned in a straight line. The frequency of nimeilun can vary, but on average, it happens a few times a year. Observing a nimeilun can be a rewarding experience for both amateur and professional astronomers, as it offers a unique opportunity to study the Moon's surface and the Earth's atmosphere in action.