Geocentric and heliocentric models

One can see many of the issues just by watching this

Comments

[Micha]

As implied by that video, geocentrism ended up working by adding epicycle upon epicycle. You can actually describe any path across the sky that way, given enough epicycles. Effectively they were approximating what they saw by creating a Fourier series.
http://en.wikipedia.org/wiki/Fourier_series

That said, it's not an issue. Being a more complicated description doesn't make geocentrism less true. Showing that the same motion could be described side by side in the same java applet makes the point that this is an example where geocentrism is actually sufficient to explain the data.

-micha

[Give it up]

And if there were only three objects in the universe, geocentricity might be true. But there's a whole lot of other stuff in the universe, proving that geocentricity is false. If you disagree, try doing what the java app is doing with all the stars in the universe included in the simulation.

[Joseph]

"Give it up": Albert Einstein disagrees with you.