1. Theories of Cosmology
... his colleagues. He instead believed that there must be a more basic explanation for how the planets moved. He proposed, that instead of many systems of circles, the planets moved in an elliptical fashion. This was Kepler's first law. This allowed for many of the complications caused by the circular system to go away, and involved a much simpler system, which matched relatively well with actual ... things that are not as solidly based, as we would think they might be. Einstein came up with theories, which could be quantifiably proved, and they were. These ideas and equations were part of...
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