This week, North Americans can witness a 'blood moon', a total lunar eclipse that causes the moon to appear reddish. This phenomenon occurs when the Earth blocks sunlight from directly reaching the moon, with some light filtering through the atmosphere, casting a reddish glow. It’s a rare event, last seen in March 1978 for most of North America. The variations in color during the eclipse can range from completely invisible to copper, assessed using the Danjon scale, which will be known after the eclipse occurs.
"The sun is shining on the Earth from behind. It's being backlit. The Earth's face will be dark, but along the edge where the atmosphere is there is sunlight filtering through."
"The 'blood' part is from the eclipse. When the Earth passes in front of the moon, it obscures the sun's light from hitting it but some still sneaks through."
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