NASA’s Juno peeks beneath Io’s surface – NASA Science0

• Juno, Photojournal, SCIENCE, Science / Health, Science Mission Directorate, scientists, Space, Space Communications & Navigation Program, Space Launch System (SLS), Space Telescope, space-x-ipo, SpaceX
• July 22, 2026

This map represents data captured by the Microwave Radiometer (MWR) aboard NASA’s Juno spacecraft, indicating the heat rising just below the surface of Jupiter’s moon Io. While infrared instruments measure the temperature of the moon’s surface, the MWR’s lower frequency microwave channels (0.6 and 1.25 gigahertz) can penetrate 6 to 20 feet (2 to 6