Tag Archives: scientific model

The Building Blocks of the Universe

“The Building Blocks of the Universe.” When you put it that way, atoms sound less like a topic specifically for a chemistry class and more like something astronomers might discuss. They really are. I’ve got a fantastic reason to include … Continue reading

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Tycho Brahe, the Observer

It is surprisingly difficult to find a flattering image of Tycho Brahe. Honestly. Do me a favor and do a Google image search for the guy. It’ll come up with all sorts of disfigured images, mostly because his nose got … Continue reading

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The Ptolemaic Universe

Claudius Ptolemy lived about five centuries after the Greek philosopher Aristotle’s time. Aristotle’s model for the universe—the first geocentric model, with Earth at the center—was still widely accepted, and Ptolemy sought to improve it. Ptolemy was one of the first of … Continue reading

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The Celestial Sphere

The celestial sphere is certainly a strange way to think about the night sky. It makes sense to use globes to diagram the Earth. The Earth, after all, is a roughly spherical planet, and flat paper maps have a way … Continue reading

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