Thinking things through

A weekday blog of current articles and books I'm reading

Thursday, August 17, 2017

Closer/smaller

When our moon comes right between our sun and the earth during daytime, we are right in the shadow of the moon and it's called a solar eclipse. Jay Richards goes on with the story:

"But the story doesn’t end there. A rare alignment of events allows Earthlings to witness not just solar eclipses, but what we might call perfect solar eclipses. Our Moon just barely covers the Sun’s bright photosphere. Such an eclipse depends on just the right sizes, shapes, and relative distances of the Sun, Moon and Earth.
"There’s no law of physics that dictates this layout. There are 65 major moons in our Solar System, and many smaller ones. But only we enjoy perfect solar eclipses. If there were Martians or Uranians, they wouldn’t see such eclipses.
"Moon is about 400 times smaller than the Sun. But the Moon is also about 400 times closer to the Earth than is the Sun. As a result, the size of the Moon on our sky matches the size of the Sun. And since they appear as round disks, they match in both size and shape."
(cont'd tomorrow)
Char at 3:00 AM
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An ordinary Christian thinking things through
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