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This tag should be used when asking questions about solar or lunar eclipses in our world or in a fictional world.

2 votes

Properties of a mysterious celestial body that creates a permanent eclipse on earth

Note that solar eclipses work with the much smaller Luna because only a small portion of Earth sees a total eclipse. …
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0 votes

How would I make a moon appear black in a night sky that has a nebula visible in it?

The Moon looks red during an eclipse because it reflect the light refracted through the Earth atmosphere, which is mostly red. Now, if the Moon was made of substances which absorb red light, there wo …
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6 votes

World with frequent lunar eclipses?

Take Earth and Moon, and make the orbital plane of the Moon around the Earth to be in the orbital plane of the Earth around the Sun. In this way each lunar month you will get a solar eclipse and a lu …
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4 votes

Small eclipse on earth

A geostationary satellite can only be placed above the equator, and therefore could create an eclipse only on and around the equator (assuming it has the right size). Not very useful to observe circum …
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1 vote

Earth-like Moon around the Gas Giant. Eclipse length?

You need to take into account two effects, given that you fixed the size of the moon: the orbital speed and the apparent size of the moon. A long lasting eclipse is granted by a slow orbiting moon, w …
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3 votes

In an eclipsing binary orbited by an Earth like planet, would the drops in brightness be not...

Eclipsing binaries are variable stars, not because the light of the individual components vary but because of the eclipses. …
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