As Saturn's active moon
Cassini discovered that geyser-like jets spew water vapor and ice particles from an underground ocean beneath the icy crust of Enceladus.
And not just one, but over 100 huge water-vapor geysers occur at the south pole of Saturn's moon Enceladus.
Enceladus, the sixth moon of Saturn, is roughly the size of the United Kingdom and covered in miles-thick ice. Underneath is a liquid ocean, which bursts out of the surface through a series of cracks at the southern pole, sending a constant geyser spraying out into space.
Uranus and Neptune are filled with "icy" materials like water, ammonia, and methane, under incredible heat and pressure. Some moons in the outer solar system have volcano-like geysers that erupt ice!
Uranus and Neptune
It's really cold that far away from the Sun. So, these chemicals might be frozen or trapped in crystals of ice. Because of this, Uranus and Neptune are called "ice giants." Images of Uranus (left) and Neptune (right) captured by NASA's Voyager 2 spacecraft.
Mars' ice caps are made mainly of water ice, although Mars is cold enough to also have frozen carbon dioxide, or dry ice. Carbon dioxide is in the Martian atmosphere, and it freezes and falls to the surface of the planet as dry ice snow.
According to data gathered from the New Horizons spacecraft, scientists say that Pluto is likely to have water ice, geysers, and volcanoes. The ice mountains are 11,000 feet high, and the planet's surface does not have a single impact crater, indicating that it is very young.
A latest discovery by the Nasa's Galileo orbiter has revealed that Europa, Jupiter's moon's icy shell may contain water reservoirs.
Active geysers on Triton spew nitrogen gas.
Uranus holds the record for the coldest temperature ever measured in the Solar System: a very chilly -224℃. The temperature on Neptune is still very cold, of course – usually around -214℃ – but Uranus beats that.
'Unlike any planets found in our solar system:' These two planets are probably made of water, study finds. In this illustration, exoplanet Kepler-138 d is in the foreground and Kepler-138 c is on the left. The low densities of Kepler-138 c and Kepler-138 d indicate that they must be composed largely of water.
Then there's Gliese 436 b (otherwise known as GJ 436 b). This alien world is located approximately 30 light-years from Earth towards the constellation of Leo. And it is made of excruciatingly hot ice.
Geysers such as those at Analavory are called cold water geysers, and there are only a handful of natural cold water geysers on earth. The best known examples are Crystal Geyser, in Utah, the Wallender Born and Andernach Geyser in Germany, and one in Slovakia, Herľany.
Europa is thought to contain 8% ice and water by mass with the remainder rock. Jupiter's outer two Galilean moons Ganymede and Callisto contain more ice since they formed further from the hot proto-Jupiter. Saturn's moon Titan looks and behaves more like Earth than any other body in the Solar System.
Europa's surface is made of water ice and so it reflects 5.5 times the sunlight than our Moon does. Europa orbits Jupiter at about 417,000 miles (671,000 kilometers) from the planet, which itself orbits the Sun at a distance of roughly 500 million miles (780 million kilometers), or 5.2 astronomical units (AU).
Research suggests that deep biospheres like that of Earth are possible. The strongest candidates therefore are currently icy satellites such as those of Jupiter and Saturn—Europa and Enceladus respectively, in which subsurface liquid water is thought to exist.
The red planet once had a global ocean, rivers, and lakes. Then, the solar wind — charged particles from the Sun — stripped away the Martian atmosphere. As the planet's protective shield faded, all liquid water on the surface evaporated into space, merged with minerals, or fled underground to become water ice.
Thus, Titan could potentially harbor environments with conditions suitable for life—meaning both life as we know it (in the subsurface ocean) and life as we don't know it (in the hydrocarbon liquid on the surface).
Pluto is about two-thirds the diameter of Earth's Moon and probably has a rocky core surrounded by a mantle of water ice. Interesting ices like methane and nitrogen frost coat the surface. Due to its lower density, Pluto's mass is about one-sixth that of Earth's Moon.
Pluto is one of the few planets where your chances of permanently being stuck in a floating state are quite high. On its surface, gravity is 94% weaker than on Earth. In theory, this could make for incredibly long jumps. However, you have to consider more than just airborne time.
Pluto has blue skies and exposed, bright red water ice, Nasa announced on Thursday, as the first spacecraft ever sent to the dwarf planet continues to send data from the edge of the solar system.
But if that doesn't sound painful enough, rain on Venus is made up of extremely corrosive sulphuric acid, which would severely burn any interstellar traveller's skin.
Neptune has nitrogen at its two poles. Now, when the gas nitrogen freezes, it looks like pink snow!
Rain on other planets is a fact. It's real, it's there, and it's happening. Evidence suggests that water vapor is present in the atmosphere of planets that have cyclones. This means that rain is possible on some planets.