Museum of Science on Instagram: "Saturn is the only planet in our solar system that could float in water. 🪐🛁 Astrophysicist @Erika.Hamden breaks down how its composition, 96% hydrogen and 4% helium, makes it lighter than water, with a density of just 0.68 g/cm³. That means if you had a Saturn-sized bathtub (and a place to put it), the ringed planet would actually bob on the surface. It’s a wild reminder of how different the gas giants are from rocky planets like Earth. This project is part of