While the earth is two-thirds water, its bodies of water pales in comparison with vast oceans of other worlds. It is possibly parched.

About two-thirds of the earth’s surface is water. One would think that our planet holds so much water and that volume of almost 300 million cubic miles is huge. But other worlds within the solar system hold much more water and earth’s vast oceans is no match.

Europa is one of Jupiter’s moons. In terms of size, it is about the same circumference as the earth’s moon. However, it has vast oceans that are more than those of the earth.

The biggest moon in the Solar System, Ganymede could hold more water than Earth and Europa combined. Jupiter’s biggest moon has 30 times more water (liquid and ice) than earth.

Through the years, scientists have been discovering that bodies of water are in abundance in a couple of moons of the solar system. The most recent discovery happened about a month ago with Dione, Saturn’s moon.

Steve Vance, NASA’s planetary scientist came up with estimates of just how much water is held by moons and planets. His estimates cover the earth and pluto and the rest cover moons of neighboring planets.
It turns out that of the nine heavenly bodies observed for liquid and ice content, Ganymede would have the most water on its surface and subsurface. Titan and Callisto ranked second and third. Meanwhile, the bottom three – the ones with the least surface waters are Earth, Dione, and lastly Enceladus.

Both Dione and Enceladus are Saturnian satellites.

There are reports of Mimas and Ceres holding huge subsurface waters but experts lack data to substantiate this.

Mimas is among Jupiter’s moons while Ceres, just like pluto is a dwarf planet.

Published discoveries on the presence of vast oceans in other worlds attract much attention inasmuch as water is linked to life. It bolsters hopes that life, even in its simplest form, may exist in satellites within and beyond our system.