space is surrounding the earth. High above the atmosphere of the earth, there is an entire new world to explore such as planets,stars,solar systems and even galaxies. They all make up what we call the universe which remains unexplored until this second. All of this started with a theory called the big bang. Although space is largely empty even though it contains planets, stars and galaxies.
A planet is an object that orbits
#around a star.Among our solar system there is a planet called earth, it has a inner core, outer core, mantle and the crust. The Earth came from a cloud in space which was made from a large amount of dust and gas. Earth was formed over billions of years ago, this dust whizzed around the sun and joined together to form lumps of rocks which then crashed into each other to form planets of like planet earth. 
The sun is part of a huge family of stars called the milky way which is our galaxy. Billions of stars combine together to make a galaxy. there are different forms of galaxies eliptical,spiral with a bar across the middle, spiral and irregular.
a galaxy
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