The moons in our Solar System

moon image
In my last article we saw the beauty of the planets in our solar system. This time we'll meet a few of our moons.

Mercury and Venus have no moons.
Our Earth has one known moon.
Mars has two known moons.
Jupiter has 69 known moons.
Saturn has 65 known moons.
Uranus has 27 known moons.
Neptune has 14 kown moons.

moon image
Our Earth has one known moon.

Ganymede, moon of Jupiter

Ganymede is the largest and most massive moon of Jupiter and in the Solar System. It is larger than Mercury and Pluto, and only slightly smaller than Mars.

ganymede image
The moon likely has a salty ocean underneath its icy surface, making it a potential location for life.

Europa, moon of Jupiter

Europa - an icy moon of Jupiter - is slightly smaller than Earth's moon. It is unique in the solar system, being thought to have a global ocean of water in contact with a rocky seafloor.

Europa, jupiter, and moon image
Europa image Europa, jupiter, and moon image
If the ocean is proven to exist, Europa could be a promising place to look for life beyond Earth.

Io, moon of Jupiter

This view of Jupiter’s moon Io was captured by NASA’s Galileo spacecraft. Slightly larger than Earth’s moon, Io is the most volcanically active body in the solar system.

io ​ image
jupiter image io ​ and jupter image
Just like a pizza...

Enceladus, moon of Saturn

Enceladus is Saturn's sixth largest moon, only 157 miles (252 km) in mean radius, but it's one of the most scientifically compelling bodies in our solar system. Hydrothermal vents spew water vapor and ice particles from an underground ocean beneath the icy crust of Enceladus.

space, moon, and saturn image
In 2005, Cassini's multiple instruments discovered that this icy outpost is gushing water vapor geysers out to a distance of three times the radius of Enceladus.

Triton, Moon of Neptune

Triton is the only known satellite in our solar system to have a surface made mainly of nitrogen ice.

planet, space, and aesthetic image
Temporarily removed