The Universe Our solar system is a small part of a much larger group of star and planets,called the Galaxy or the Milky Way.In the solar system there are eight planets go around the sun.They are Mercury,Venus,Earth,Mars,Jupiter,Saturn,Neptune and Uranus.(I don't know if Pluto is a planet)Scientists have sent spaceships to the planet Mars even outside the solar system to take photo.However,we haven't found life on any other planet yet.With so many stars in the universe,are we alone,or is there life out there in space?