1 | Earth is a planet in general, but the human knowledge that this point is in the 16th century, after the Copernican heliocentric theory put forward. | |
2 | Dear Copernicus: I'm a was reading of the students, I think you the heliocentric theory of gravitation is, I hope very much to you can publish your own ideas. | |
3 | The achievement in astronomy was the revival and proof of the heliocentric theory that is regarding the sun as center. | |
4 | This is a simplified model for showing the same observation in geocentric model and heliocentrism. Blue ball means Earth. | |
5 | But in a world in which, according to Vermij, the Tychonic system was regarded as a serious rival of the Copernican system, Marius's conclusions seem reasonable. |