Ocean scientists and space enthusiasts have been dreaming for years about what might exist in alien oceans, like the one thought to slosh beneath the ice of Jupiter’s moon Europa. While actually drilling through the frozen crust presents several challenges, what if we could send a probe to simply taste extraterrestrial seas that are leaking into space?

New observations from the Hubble Space Telescope suggest we may be able to do just that: The data offer a second round of tantalizing hints that plumes of water vapor are erupting from Europa’s mysterious interior. (Explore Europa's under-ice ocean with this interactive graphic.)

Astronomers are careful to note that while the observations are promising and cleverly designed, Hubble’s latest look still doesn’t show