If Earth collided with a Mars-sized planet, it's not clear to me how Earth could still have a near-circular orbit around the sun. I would think any such collision would seriously alter the orbit, perhaps even out of the plane of the ecliptic.
Where's the Mars-like planet now? Did it become Mars or was it absorbed into Earth?
Consider if the primitive Earth and the Mar-sized planet were in almost the same orbit. The collision would have slowed down or sped up the Earth, but not significantly change its path.
It doest have a near circular orbit. Also the earth's orbit is on a slightly different plane of most of the other planets. I think Pluto is the only other planet with a tilted orbit plane. Thank public schools for the dumbed down science books for thinking the orbit is circular.
The fact that the moon always faces the earth on one side and faces away on the other, should have been enough proof that it came from the earth, weather spit out from some huge explosion or a collision with a very large object.
It doest have a near circular orbit. Also the earth's orbit is on a slightly different plane of most of the other planets. I think Pluto is the only other planet with a tilted orbit plane. Thank public schools for the dumbed down science books for thinking the orbit is circular.
The fact that the moon always faces the earth on one side and faces away on the other, should have been enough proof that it came from the earth, weather spit out from some huge explosion or a collision with a very large object.