Like Earth, some of these oceans are salty and cover a rocky seafloor.
other ocean worlds
But it’s not the only one
Seawater flowing into cracks
in the seafloor might become heated and react with minerals in the rocks.
looking for life
Sampling these jets
might tell us if the conditions exist to support life or if life exists beneath the ice.
Earth is an
Plumes from vents
would likely circulate through the ocean much differently than they do on Earth. This is because Earth's ocean is heated from above by sunlight and other ocean worlds rotate faster or slower than Earth.
and several other planetary bodies in the solar system have oceans under a thick crust of ice.
caused by the host planet might deform and crack the ice crust.
And if we find life there,
Hot, chemical-rich fluids
could then flow back to the surface. On Earth, these hydrothermal flows provide "food" for a diversity of micro-organisms.
Jets of water
through the cracks provide an opportunity to sample the ocean by flying a probe through them or by landing on the surface nearby.
it could mean that life is abundant
throughout the Universe.