The biggest planet's 5 deepest mysteries.

The article presents information about the planet Jupiter. The author explains that because Jupiter is a gas-giant planet, it can be challenging to understand it. Scientists have created a device that can mimic the behavior and composition of Jupiter's core so that it can be studied. The author also explains how gas-giants form and how their atmospheres and oceans come to be. INSET: DOES EUROPA HABOR LIFE?.