A. Saturn
B. Jupiter
C. Uranus
D. Neptune
NASA’s Juno spacecraft made new measurements of Io in July 2026, providing information about heat rising from beneath the surface of Jupiter’s volcanic moon. Io is known as the most volcanically active world in the Solar System.
The new observations help scientists understand how heat moves through Io’s interior. This is important because tidal forces from Jupiter and other moons generate enormous amounts of heat inside Io.