AS101 Lecture Notes - Lecture 14: Solar Wind, Nebular Hypothesis, Kuiper Belt

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24 Sep 2013
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When we observe lies from an astronomical source, for example, all the spectral lines of hydrogen, we can compare them with a reference spectrum from hydrogen gas in the lab. If the source is moving toward us, the spectral lines will be shifted to higher frequencies (blueshift) compared to the reference spectrum. If the source is moving away from us, the lines will be shifted to lower frequencies (refshift) What are the main objects in the solar system: The sun: the sun includes most of the matter in the solar system, mostly hydrogen and helium. Mercury, venus, mars, jupiter, satun, uranus, neptune. My very excellent mother just serves us nachos. Other parts of the solar system: the asteroid belt: Asteroid belt is a region at distances approximately 2-4 au from the sun, between the orbits of mars and jupiter. Total mass adds up to about 3x10^21 kg, or 4% of the moons mass. Includes between 7000,000-1,700,000 objects with diameters of.

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