The moons of other planets orbit close to their equators. Our moon is the only one that orbits close to the ecliptic. this is what stabalizes the earth's rotation axis at 23.5 degrees. without this, our seasons would be thrown out of whack.
And God said, Let there be lights in the firmament of the heaven to divide the
day from the night; and let them be for signs, and for seasons, and for days,
and years:
Genesis 1:14
