The inclination of the Moon’s orbit relative to Earth’s equator varies, ranging from approximately 18.3 to 28.6 degrees over an…
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Do Planets Rise at the Same Terrestrial Azimuth as the Sun?
Planets that are in orbits that are closer to the Sun than Earth (Venus and Mercury) generally follow the…

Total Solar Eclipse Durations
In fact, all total solar eclipses are due to the projected disk of the Moon completely covering the projected…

How Far In Advance Can One Predict Solar Eclipses?
There is a really nice and detailed answer to this question posted on the Ask Dr. Universe blog. Even…

When will the Last Total Solar Eclipse Occur?
Richard Fienberg provided the answer to this question in a post to Sky & Telescope in 2006. As you…

Is the Rate at Which the Moon is Moving Away from the Earth Consistent with its Age?
Yes. The Moon was formed during a giant impact about 60-175 million years after the solar system was born. …