Gottfried Gutsche(Mississauga, Canada):
A very good magazine quality article. Yes, this is a correct assertion that planet forming from a proto-nebula dust is un-supportable in physical terms. The additional argument can be made that the planet stable orbital radius is a function of the orbit tangential vector kinetic energy of the planet: mV^2=kMm/r; wherein V is the planet vector velocity, m is the planet mass, M is the sun mass, k is the gravitational constant and r is the planet orbital radius around the sun. This leaves only two possibilities for planet forming: 1) An oblique collision of a massive object with the sun, causing a subsequent proto planet mass erupting from the sun; or, 2) a oblique gravitational capture action of the planet mass from outer space the way we shoot satellites to mars or return satellites to earth. The collision is the most likely candidate accounting for the variety of elements on earth. Perhaps it's worth to include this idea.
Posted: April 01, 2015 @ 12:11:52 am