Blog 5 – Comet Composition

Comets are the relatively small, icy objects that orbit a star.  They are classified as “small solar system bodies”, as are asteroids.  Along with ice, they contain rocky dust and other complex chemicals, leading them to be described as “dirty snowballs.”  Spectra can be used to determine the composition of comets.  From them, we know […]

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Blog 2 – Occam’s Razor

For my second blog, I thought I’d discuss the idea of simplicity in astronomy; specifically, the idea of Occam’s Razor.  One of the hallmarks of science is the progression of creation and testing of models of nature that explain scientific observations as simply as possible.  This idea, that scientists should prefer the simpler of two […]

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Blog 1 – Cosmic Calendar

For my first blog, I wanted to discuss the cosmic calendar.  From the picture below, you can see, from a human bias, the five most important events in universal history, symbolized in the julian calendar: the big bang in january, the formation of the milky way in march, the development of the solar system in […]

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