The orbit theory(details)

The orbit theory has been used to explain the gradual warming of the earth over the last century.This theory is based on the knowledge that the universe is not constant in size but is expanding in size;it is moving outwards.This results in our entire solar system moving outwards.The planets will move at different speeds.Smaller planets will move faster than larger planets just as a baseball  will move faster than a basketball.Consequently the earth will move  faster than the sun outwards.
Genesis
Apparently it took almost 400,000 years for the universe to expand or move in  any way.Like a ball of cellophane that is all rolled up.Now the universe is several million years old  and has unwrapped at first at greater speed and then at a slower speed.I believe that at this age the  unwrapping (or expanding) has slowed down.It is easy to think of  it  as billions of planets wrapped into a ball and gradually expanding outwards.As our solar system moves outwards the planets will move at a different rate than the sun.But the differential in speeds is decreasing.                                          There is only a finite amount of energy in the universe.  As it unwraps,energy dissipates and the unwrapping or expanding slows down.Now the universe is several million of  years old and is slowing down in it's expansion.
Centrifugal forces
The earth is caught in a belt or zone in it's orbit around the sun.It will move to the edge of the envelope(containing the orbit) because of the "extra" speed it has because of moving faster than the sun.However it is believed that the universe is slowing down in it's expansion outwards because of it's age.There will gradually be less and less force to move the earth to the edge of it's orbit zone and it will move back to it's original orbit.
The proof
The proof is the  reason for having a theory at all.The earth has unexpectedly warmed up 3 to 4 degrees above the average temperature over the last century.As the differential between the earth's and the sun's speed reduces, the theory expects that the earth's warming will increase only slightly and then start to cool down.The earth's orbit will gradually return to it's original shape.