Can one ever observe an annular eclipse of the Moon?
- Anonymous8 years agoFavorite Answer
No. Annular eclipses are solar eclipses only.
- SyzygyLv 48 years ago
No. The width of Earth's shadow is about twice as wide as the Moon where the Moon is. However, billions of years in the future, the Moon will have moved away to the point where the Earth's shadow may be smaller than the Moon itself, and so there may be annular lunar eclipses in the future.
But it still depends on how fast that happens and the evolution of the Sun. If the Sun is a white dwarf by that point, it may be smaller than Earth itself, and so there may never be an annular eclipse of the Moon.
- MorningfoxLv 78 years ago
"Annular" is a perfectly good word, meaning ring-shaped. For a solar eclipse, it is when the moon covers most of the sun, but a disk of the sun can be seen all around the moon.
For a lunar eclipse, it would be when the Earth's shadow covers most of the moon, except for a disk around the edge. Since the Earth's shadow is much bigger than the moon, this can not happen.
- Vince MLv 78 years ago
First, "annular" is not a word. Perhaps you meant to write "annual," which means once a year.
Secondly, there are two types of eclipse. Lunar is when the Earth's shadow falls on the moon. A Solar eclipse is when the moon's shado falls on the Earth.
Neither one of these is limited to, nor required to occur once a year.
You have to clear up what you mean if you want a good answer from us.
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- vorenhutzLv 78 years ago
no, the earth's shadow is much bigger than the moon.
- ?Lv 68 years ago
It's been photographed so it can be visually observed.
Better use an arc-welder's glasses though.