Dark Sky Stations, Stratospheric Satellites, and Ultra Low Orbit Infrastructure (Narration Only)
Science & Futurism with Isaac Arthur
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Introduction
Gravity is an invorce square force, meaning proportional to the square of the distance from the centre of the planet. The iass is only 254 miles or so up, just six % farther from the earth's centre than you are. So if the i s s is at point eight, seven g, why does it fall? Well, but as isaac newton famously illustrated, if you travel fast enough over the surface of a planet, you'll keep falling round it indefinitely. Orbital speed is on an order of eight kilometers, or five miles per second. In low orbits, or earth atmosphere, about 100 times what your car is doing on a highway,. 100 times as fast
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