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This is cool, and I'm a sucker for gravity/space simulators (as my hours logged on Celestia would prove), but it should be noted that in terms of "galaxy" it's
by jpco 12y ago
This is cool, and I'm a sucker for gravity/space simulators (as my hours logged on Celestia would prove), but it should be noted that in terms of "galaxy" it's inaccurate. Specifically, this inaccuracy (the galaxy rotation problem) is the driving force behind the hypothesis of dark matter [0].
I don't mean to be pedantic or anything. I just think it's interesting.
[0] http://abyss.uoregon.edu/~js/cosmo/lectures/lec17.html http://abyss.uoregon.edu/~js/cosmo/lectures/lec17.html
- drinchev 12y agoYeah maybe it would be nice idea if when you generate a galaxy it also generates small dark matter particles around the regular particles.
- bitJericho 12y agoFirst a simulator like this would have to be written with Einstein's equations. This is (just a guess) a newtonian physics sim.
- cge 12y agoNo. The dark matter problem exists in Newtonian models as well.
- phkahler 12y agoWhat laws of gravity would those particles have to obey?
- drinchev 12y agoI think the answer of your question is being seek by a lot of physicists.
- phkahler 12y agoAFAICT the rotation problem stems in large part from trying to use Keplers laws for a galaxy where they simply do not apply. I've even seen this problem in an article in Nature. It's quite a bit more than a 2-body problem. I'm in favor of these simulators plotting the rotation curves of simulated galaxies.
- pacmon 12y agoIf you like simulators like this you might be interested in this game: http://store.steampowered.com/app/72200/ http://store.steampowered.com/app/72200/