"Greg Crinklaw" wrote in message
...
If you are truly interested in the answer to this and other questions I
suggest you visit your nearest college bookstore and purchase a basic
101 astronomy text. They are all written at level most people can
readily understand and there is little/no math.

Is having "little or no math" really a benefit, Greg?

Personally I often find a mathematical description of something to be a far
clearer and unambiguous explanation of it than a page of words whose meaning
is far less precise, and which is open to misinterpretation.

Maths is a powerful tool, and it's really nothing to be scared of, is it?

If we didn't have a mathematical description of the motion of the sky, you
and I certainly wouldn't be writing the software that we are today :-).

Regards,

Chris