Question

What planet is so light it could float in water?

Answer 1

It is Saturn because it's density is less than water

Answer 2

Saturn is the planet which float even in water because the density of saturn is less very compared to that of water and it's mostly made up of gas. The density of water is 997 kg/m^3 where as saturn's is 687 kg/m^3 so difference of density of both water and saturn is 310 kg/m^3

i hope this helps u