"Growing Earth" theory ... Answered

The reason why stars grow and planets don't is straight forward.   Stars are made of gas and can make heavier element via nuclear fusion in their cores.  Fusion is caused by the gravity wanting to implode the star, while the expanding gases want to blast it apart.  The equilibrium of these two forces in influenced by the mass of the star which is why higher mass stars have shorter life spans.  Where your lower mass stars live longer.  Planets, on the other hand cannot make "new matter" in their cores to change their mass.  Anything below stellar mass is stuck whatever amount of matter accumulated during accretion.  Simply put, Earth like any other planet has a set mass budget that CANNOT be altered, unless it were to collide with another object of lunar mass or higher.

Hm. Never heard that theory before. Makes sense to me. I don't follow, though, how how of necessity Mars, and other planets must also be exhibiting this behavior. Though, if true for earth, I could say it's probable that Mars does this as well. And I don't understand how this would affect our understand of subatomic particles, unless he is implying that the earth is becoming more massive and not simply less dense as it grows. Cool. Thanks for posting. It's funny what doesn't appear in science textbooks for fear.

. Very interesting, but I have a tendency to discount those whose shout conspiracy. And his conclusion really rubs me the wrong way,