re: Expanding Earth
Hi All
The expanding earth has some data backing it, but it really requires mass-creation within the earth to happen, and there just isn't anyway for that to happen that we know of. That hasn't stopped Carey and his supporters from continuing to promote the idea, but I don't think geology can provide sufficient evidence to back something so radical as mass-creation.
There's another hypothesis of on-going accretion, but it's proponents are totally misinformed and we just don't see the incredible bulk of interplanetary dust that theory would require.
Alternatively the Earth might have had a core existing in a high-density meta-stable phase that has expanded as the Earth has aged. Maybe...
Adam