[DGthe3]

the claim was made that the earth has doubled in size? Did it double in radius? Area? Volume? Land area makes the most sense considering the topic that was discussed. Doubling in area means that the volume would be 2.83x larger. So density would then have to have gone down by an equal factor for mass to remain the same. So, given that the current density for the earth is ~5.5g/cc, it would have had to have a density of 15.6 g/cc before expansion. This is halfway between the density of lead and gold.

One other problem with this though, if the earth had to double in area while maintaining the same mass, the force of gravity at the surface would have been twice as strong before it grew. Unfortunately, this would have made dinosaurs impossible to stand.

If the earth had significantly less mass eons ago, the moon would never have maintained a stable orbit. Since we have a moon and dinosaurs fossils, I think that proves that this guy is talking out of his ass.