The mass of the Earth has never been directly measured. It's calculated using the radius of the Earth, the value of g we get from a ball drop experiment (acceleration due to gravity), and the gravitational constant, G.
The Mass of the Earth
Earth’s Burning, Churning Engine
New research has uncovered a flaw in our understanding of the core — specifically, about the manner in which heat energy flows from the core and through the overlying mantle.
If Hell is Expanding Why isn’t the Earth Getting Bigger?
Continuing the theme of weird things that people say on social media there's another question which comes up from time to time which pertains to Jesus' teaching on hell.
Hell is Expanding in the Old Testament
Hell wasn't part of the six days of creation, it's a direct consequence of sin. At the fall of man in the garden of Eden God cursed the Earth. This was the beginning of nuclear decay.
The Bars of the Pit
"The bars of the pit" is a synonym for "the pillars of the earth." They're in the great gulf or "mega chasm" which is the region of Earth's interior which popular science (SciPop) calls the "liquid outer core."
The Great Gulf P-wave Shadow
The popular science "liquid outer core" is speculative at best, and there is no reason why it can't be open space. The P-wave shadow zone is the great gulf of which Jesus spoke in Luke 16:26.
Sheol
Sheol refers to life beyond the grave, quite literally an underworld realm of the dead. It's also modified in a variety of ways which can be grouped to correspond to the main regions of the interior of the Earth.
Scientists Just Narrowed Down The Age of Earth’s Inner Core
The inner core isn't the same age as the rest of the Earth, it's younger. That's because hell began when nuclear decay started at the fall of man in Genesis 3.
Global Warming
As the waters abated after Noah's flood there was significant global cooling which caused equatorial and polar glaciation. There were temperate zones in the Northern and Southern hemisphere.
Tehom became Sheol
The region between Earth's core and mantle, referred to by Jesus as a mega chasm or great gulf, has to transition from water filled to open space due to the expansion of hell.