On Sat, 26 Mar 2016 14:04:14 -0400, Davoud wrote:

Besides, I started this thread to ask a legitimate amateur-astronomy
question about a matter that I did not understand and the nut cases and
the pedants hijacked it. Thanks to Roland and to Chris Peterson for
sticking to the subject and helping me understand what I needed to
know!

My original draft had included this important fact; but I took it out to
shorten my post, and norrow my focus.

Email address is a Spam trap.