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Space is places away from earth's atmosphere. If you went 100 miles above earth in space, you are in space. That is because there is no line depending on where you are:earth or space, but humans just Estimated that. Space is home to lots of Stars, Galaxies, Planets and more! Space is very Cold though because if you had your space suit off for even a few Seconds you will freeze. But stars in space are very hot;a star could get up to 9 times the heat of earth's core (1371 degrees Celsius). When a massive or giant star Dies, it causes a black hole to happen. Some of the biggest black hole could have up to 66 million times the mass of the sun. Space started expanding when the big bang happened. Most items or objects in space are far away form each other. The closest galaxy is about 66 billion miles away. And a lot of planets are hundreds of thousands or maybe even millions of miles away.

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