Hello! Long time peeker, first time poster. I recently made a GR joke/brainteaser on a pop sci blog I frequent, and the tirade of nutty reactions it provoked drove me to an agitated contemplation of the matter, which gave rise to a few ideas. I was thinking that maybe a Gallileo type orange/grape experiment in a decent sized vacuum chamber, shielded with a high powered electromagnetic armour (maybe with testing at different altitudes) might give results that could differ enough from the GR warped space-time model to support a quantum gravity based theory? Does anyone know if such an experiment has been done already, and if not does anyone want to lend me a blowtorch, a few shipping containers, some jet engines, a power station, and a mountain? And an orange?