Originally posted by XplosiveIf Galactus' energy stores are depleted enough, lesser forces than Thanos can, and have, caused him physical harm. So like I said in my former post: IF Galactus uses the bulk of his power to battle Tyrant, there is a chance Thanos could capitalize on his weakened state.
Like you said, the only option is after the battle with FP Tyrant, and even then Thanos probably wouldn't be able to do much (except maybe with help of heralds (if still having powers) to drove him away).
There is also a chance Galactus would just destroy Thanos in the opening moments of the battle. There is also a chance that even if Thanos were alive long enough to watch Galactus/Tyrant duke it out, he would be destroyed by the resulting flares of energy they released.
sdurug