fascistcrusader
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So mister genious, how fast was the shattered God pulling himself back together From AROUND THE UNIVERSE.
You keep getting hung up on this part, let me explain it onme more time. If he was scattered all across the universe and he had near infinite pieces like you say, then its not only possible, its extraordinarily likely that the pieces he was pulling in weren't anywhere close enough to have to be going lightspeed. There is nothing suggesting Wondy is FTL, please stop confusing fandom with fact.
The serpent was never stated as being the weight of the planet, just like how a worm wrapped around a apple isn't the same wieght of the apple.
Flesh, bone and organs aren't exactly light though. Have you ever held a large python or boa? Those are incredibly heavy for their size. If one was large enough to coil round the Earth it would be in the same league as many planets. It might not weigh what the Earth does, but its still a body with a planetary scale mass.