reply to post by Erongaricuaro
The best way to convince anyone (or yourself) that the Moon cannot
be hollow won't be easy.
You see....firstly, one must understand the mathematics of orbits, how to calculate them. Of course, this is already documented, and freely available
to research....math effort is done for you....but, a "doubter" may not wish to take anything at face value. Fine, do the math yourselves then (if
you know how).
Knowing the details, undeniable, of the Moon's orbit...apogee, perigee distance from Earth, and orbital velocity (period)....AND knowing the Earth's
mass....the mass of the Moon can be calculated. Again, this is readily available, by researching...the work has been done already.
Now....this is key: Knowing the mass of the Moon, and
its diameter, then the average density can be calculated. That figure can be
compared to known materials. Furthermore, if one wished to hypothesize that there was a large, large volume of *emptiness* in the interior of the
Moon...a 'void', as if it were hollow, then the remaining material that composes the rest of it, would have to have a greater density, per cubic cm,
in order to make the total mass equal to what is measured.
This will wreak havoc with the known (from Apollo Lunar samples, and to a lesser extent, the few grams that the USSR returned, from their unmanned
missions) make-up and composition of the Moon....at least, its crust, as inferred by the aforementioned samples.
Additionally, there is solid working theory about planet formation and development, to consider.......