NASA’s Juno spacecraft is set to probe the interior of Jupiter to shed light on the mystery of the amount of water and other volatile species within the gas giant. Launched in 2011, the Juno spacecraft arrived in orbit around Jupiter on July 4th, 2016. One of its primary scientific objectives is to determine how much water Jupiter contains. Jupiter is the largest planet in our solar system, and its composition and interior structure have been a subject of ongoing scientific research. By measuring the planet’s gravitational field with its onboard radio science instrument, Juno will provide important information about Jupiter’s internal composition, including the amount of water it contains. Scientists hope the spacecraft will be able to determine whether Jupiter’s interior is mainly rocky or dominated by “ices,” such as water, methane, and ammonia. This will provide insights into the formation and evolution of Jupiter, as well as help understand how the gas giants in our solar system formed. The findings will contribute to our knowledge of the origin and composition of the giant planets and have implications for understanding the formation and evolution of the Solar System.