News in Brief Planetary Science

Aurora shift confirms Ganymede’s ocean

Jupiter moon’s underground saltwater explains Hubble telescope observations

Ganymede

SEA SIGNS  Shifts in Ganymede’s version of the Northern Lights, illustrated here, suggest that a saltwater ocean lurks beneath the icy crust of Jupiter’s largest moon.

NASA, ESA

By Christopher Crockett

- More than 2 years ago

Jupiter’s largest moon, Ganymede, has solidified its membership in the growing cadre of solar system locales where liquid water flows beneath the surface.