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by ChuckMcM
2842 days ago
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One of the interesting things about the galactic orbit is that our system is not exactly in the galactic plane, so as it orbits it passes through the plane to the other side and then back again. The kinetic energy of objects is proportional to the square of the velocity (Ke = (mv^2)/2), so an object going 4 times faster than a solar system object has 16 times the energy for the same mass. This makes it possible to have extinction level events from rocks that are 1/4 the size of planet killing asteroids. |
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