Solar Systems in Motion DOCUMENTARY Everything in the Universe IS Moving
Galaxies have millions and millions of stars orbiting within them, and across very large scales, galaxies orbit in giant clusters. We know this thanks to Johannes Kepler, working with data painstakingly collected by Tycho Brahe without the aid of a telescope. What they discovered we know know as the three laws of motion. They accurately describe the motion of the planets across the sky and they have been used to predict the orbits of many objects such as asteroids and comets, and were pivotal in the discovery of dark matter in the Milky Way.
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- Universe - Vũ Trụ