In the new study, the scientists tracked how the radio signals from Juno back to Earth bent as they passed through Jupiter’s atmosphere, before cutting out when the planet blocked the signal entirely. Those measurements allowed the team to account for Jupiter’s winds, which slightly alter the shape of the gaseous planet. Then, they used that information to make precise calculations of the planet’s shape and size.
I wonder if this is the largest ever experiment with a manmade “flashlight”.