Is it really possible for a liquid to stay afloat a gas (vapor)? I have a book at home called Chemical Thermodynamics for Process Simulation (I have the first edition) and at the very beginning of chapter 2 of the book one may read the following:



No reference is given. I have never found anything about it so far and I am curious to know whether this statement is true.
Yes! Here's a video of Cody floating NaK (liquid) or ethanol/water (liquid) on compressed xenon (gas):
https://youtu.be/AsP4yMY-a6U