2024年02月13日
Next and Only Red Moon
The next lunar eclipse will take place on March 25th, Monday, 17:56 o 18:32. While another month might seem like a long time to wait, it will be the only eclipse visible from Japan this year. The next one won't take place until next March.
Both are only prenumbral lunar eclipses, not total eclipses. When we look at shadows, many of them have a fainter, lighter shadow on the edge. The prenumbra is what we call the faint part of Earth's shadow. So, the moon will only be in partial shadow, and it will be faint. It my also appear red, for the same reasons the sky looks blue and the sun looks red in the evening. When there is less light, the sky filters out all the blue light and only the red light reaches the ground. Interestingly, the shadow of a lunar eclipse even looks red from space, as you can see from this colorful image taken by NASA's EPIC camera during the lunar eclipse in October of 2023:
https://earthobservatory.nasa.gov/images/151954/darkened-by-the-moons-shadow
Both are only prenumbral lunar eclipses, not total eclipses. When we look at shadows, many of them have a fainter, lighter shadow on the edge. The prenumbra is what we call the faint part of Earth's shadow. So, the moon will only be in partial shadow, and it will be faint. It my also appear red, for the same reasons the sky looks blue and the sun looks red in the evening. When there is less light, the sky filters out all the blue light and only the red light reaches the ground. Interestingly, the shadow of a lunar eclipse even looks red from space, as you can see from this colorful image taken by NASA's EPIC camera during the lunar eclipse in October of 2023:
https://earthobservatory.nasa.gov/images/151954/darkened-by-the-moons-shadow
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