The Juno mission, designed to help scientists better understand Jupiter's origin and evolution, was launched in 2011 to map its gravitational and magnetic fields and probe the planet's deep, internal structure.
It's found some mysterious gravitational readings which experts infer mean Jupiter's core is less dense and more extended that expected.
Jupiter began as a dense, rocky or icy planet that later gathered its thick atmosphere from the primordial disk of gas and dust that birthed our sun so what if the recent data could be explained by a giant impact that stirred Jupiter's core, mixing the dense contents of its core with less dense layers above.
Like another planet.