Lecture 6 - Stars exhibit random motions (like bees in a...

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Solar Neighborhood Nearest stars are approx. 1 pc apart from each other Nearest star to Sun is Alpha Centauri which is actually a triple system with 2 Sun-like stars and a dim star Proxima Centauri, closest one to us Such star systems are quite common, 2 or more stars which travel from space together bound by their mutual gravity
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Unformatted text preview: Stars exhibit random motions (like bees in a swarm) speed 25-50 km/sec But the swarm also orbits the galactic center located much further away. Until 1920s, 2 rival theories about nature of light: wave vs particle . Quantum mechanics developed in 1920s resolved the apparent paradox: light is BOTH....
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