From Jay Richards at Evolution News & Views:
On August 21, we Americans get to see a total solar eclipse. As I mentioned in a previous piece, we can see solar eclipses only because our planet, our Moon, and our Sun sometimes come together in a straight line in space. When the Moon passes between the Sun and Earth, those in the Moon’s shadow see an eclipse.
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.
The 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.
…
As it happens, this precise arrangement of Earth, Moon, and Sun helps sustain life on Earth. Let me explain. More.
Hmmm. If it is a coincidence, what are the odds?
See also: Copernicus, you are not going to believe who is using your name. Or how.
and
What becomes of science when the evidence does not matter?