Does E=MCsqd explain global warming?

If circa 1987 Mercury had a diameter roughly 1000 miles larger than it does now and if this loss came as a result of increased or close contact to the Sun, would the loss in m due to the bombardment from a source eminating rays at the speed of light, and subsequent 'frictional' equatorial loss indicate more rays hit the Earth and have played into global warming as much as pollution?