Where did scientists find an extraterrestrial ocean?

Answer 1

As of 2008, Titan, a moon of Saturn, is the only object other than Earth known to have liquid on its surface.

The lakes of Titan are liquid ethane and methane.

There is evidence of large bodies of liquid water elsewhere in the solar system, but none have been confirmed.

Many bodies in the solar system are partially or entirely covered in water ice, and it is believed that liquid water is below some of them, but none have been confirmed:

* Enceladus, a moon of Saturn, is covered in water ice. Geysers of water ice have been observed on Enceladus, which seem to be evidence of subsurface liquid water oceans.

* Europa, a moon of Jupiter, is covered in ice and may have a global ocean of water under that ice. The ocean of Europa is believed to have over twice the water volume of Earth.

* Titan, Callisto, Ganymede, and Triton may also have global oceans of water under their icy crust.

* Other icy moons may have oceans of water under their icy crust.

* Ceres, the dwarf planet, may have an ocean of liquid water under its surface.

* There may be lakes of liquid water under the polar icecaps of Mars, similar to Lake Vostok.

* Uranus and Neptune may have a global ocean of liquid water under the thick atmosphere.

* Jupiter and Saturn may have a global ocean of liquid hydrogen under the thick atmosphere.