hw6 - Eric Couillard Astro 142 12 March 2008 Homework#6 1 a...

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Eric Couillard Astro 142 12 March 2008 Homework #6 1. a. 2. The CMB has fluctuations because the temperature of the universe is varied in some places such as galaxies. If these galaxies were the same temperature as the CMB, they would all be dead and so would we. So these variations in the CMB represent different areas of activity. The reason the fluctuations are so small is because galaxies themselves are spread so far apart. 3. When matter meets antimatter there is a total annihilation of mass into energy. Even with fusion, much of the mass remains as mass, and only a small amount is converted into energy, but in the case of matter-antimatter annihilation all of the mass is turns into energy. b. Antimatter is very difficult to cultivate. It involves taking high energy photons (eg gamma rays) and smashing them into each other at extremely high velocities, which is very difficult to create on Earth and is done in particle accelerators. Even if you do succesfully create antimatter, it will immediately be annihilated upon contact with regular matter, which is what our world consists of. 4.
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hw6 - Eric Couillard Astro 142 12 March 2008 Homework#6 1 a...

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