At first glance, this seems like such a simple question of "What's the highest point on Earth". However, I also know that the Earth isn't perfectly round. So that "highest point" may be in a relative valley.
Also, because it's non-spherical, the "center" may not be easily obvious either. So, I'm curious if there are different answers based on different definitions of "center" (such as geographic center versus center of mass).
So, what is the point on the Earth's surface farthest from the center of the Earth? Is this different based on different definitions of "center"?