space NASA's Juno Probe Detects Salts and Organic Compounds on Jupiter's Largest Moon Ganymede Scientists speculate that these findings could suggest the existence of hydrothermal activity deep beneath Ganymede's icy surface or interactions between its subsurface ocean and the planet's interior rocks.
space NASA's Juno Probe Recorded the Sound of Jupiter's Moon NASA launched the Juno probe into space in 2011. In almost five years, Juno reached Jupiter. In 2016, it began to study its surface and subsequently transmitted unique photos of the giant planet to Earth.
