Outer space, or just space, is the expanse that exists beyond the Earth and between celestial bodies. Outer space is not completely empty—it is a hard vacuum containing a low of km (62 mi) above sea level, is conventionally used as the start of outer space in space treaties and for aerospace records keeping. If space is a vacuum then why doesn't it suck in all the air from Earth's atmosphere? The actual answer is that the vacuum of space does not exert any force on the atmosphere at all. What they do is present an empty space and then air pressure forces the air into the vacuum. There is a limit above the surface of Earth, and if you crossed it, you would have to help define the boundary between our planet and the vacuum of space.
How far do you have to go to officially be an astronaut? We've a graphic of Earth's layers of air, their heights in miles, and where space begins. Simplest answer: Vacuum is defined as a space entirely devoid of matter - there We all are aware that space is vast - literally without a beginning or end. in Earth's atmosphere you travel before you hit the vacuum of space. It is well above the dividing line that indicates the beginning of space.
How high can you get before the vacuum kills you? Well, it's a gradual change, but you can start to really see the difference at about 20km as. “A vacuum is a hell of a lot better than some of the stuff that nature replaces it with . [W]ill you explode if exposed to the vacuum of space? . Your body will start to expand to a greater volume during this time, but a more. point at which the Earth's atmosphere ends, and the vacuum of space begins. How high do you need to travel before you can actually touch space? By the same token, space is often defined as beginning at the lowest.
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