If Olympus Mons definitively the tallest / largest mountain in our solar system, how do we know the gas giants don’t have similar or larger mountains underneath their thick atmospheres?

Question

If Olympus Mons definitively the tallest / largest mountain in our solar system, how do we know the gas giants don’t have similar or larger mountains underneath their thick atmospheres?

In: 583

Answer 1

I think you would need tectonic plates for mountians, and there are no such plates in the gas giants. No?

Answer 2

I know a guy who wants to live on the top in a giant plastic bubble, like a big plastic nipple. Weird.