The solar system is a collection of a stars with planets going around it. What a star is, its just a ball of gas that is on fire. A Nebula is a giant cloud of gas in space some Nebula's come from the gas thrown by explosion of a dying star and also it forms stars. How stars die is that they expand and they explode, the explosion is called a supernova, although it takes millions of years for them to explode.There is no Up and Down in space. You can use stars to navigate but you need to know your constellations there are 6 constellations that you need to know here are there names Ursa Major, Ursa Minor, Cassiopeia, Orion, Crux, and Centaurus. To use the stars to navigate there is a North Star, Southern Cross, The East and the West and once you found them you have to Determine your latitude Calculate you latitude and then you use your resources.
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