Neptune
Neptune is the last of the Gas Giants and, because of the shape of Pluto's orbit, it is sometimes the furthest planet away from the Sun.  Although it's blue and white colourings could remind you of Earth, it would be hard to imagine a planet more different!

The ice cold temperatures would freeze you and, because of the fact that it's made of gas, you would just sink straight to the core anyway!  There is no way that any kind of life that we know of could survive in such a hostile environment.
  • Violent storms such as its 'Great Blue Spot'  permanently skim across the surface of the planet. 
  • Like Jupiter and Uranus, its rings are almost invisible unless up-close. 
  • Neptune has a lot of moons, just like all the other planets in this part of the Solar System (apart from Pluto).  The largest of its moons, Triton, orbits the planet in the opposite direction to the other seven.
  • It is so cold on Neptune that you would need to have thicker skin than a polar bear to stay warm.
  • The only spacecraft ever to visit Neptune was Voyager 2 in 1989.
  • The 1,500 mph winds on Neptune are the strongest in the solar system.
  • Neptune was discovered in 1846 when Uranus did not follow the orbital path predicted by astronomers.  They assumed that the gravitational pull of another object was affecting the orbit, and this led them to look for, and find, Neptune.

From data collected by Voyager 2 we know that Neptune and Uranus are very similar in composition. In the upper atmosphere of Neptune, methane freezes and forms an ice cloud.

Because of Triton's orbit and its composition and density, astronomers believe that it is not a natural satellite of Neptune.  It is possible that it was captured by the planet's gravitational pull and forced into orbit.

Images courtesy NASA/JPL-Caltech