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Politics : The Trump Presidency -- Ignore unavailable to you. Want to Upgrade?

To: one_less who wrote (11511)	2/19/2017 6:34:53 PM
From: combjelly	Read Replies (2) \| Respond to of 362953

Good question, almost as good as "why?" As Brian Greene points out, sometimes there is no real answer to "why"? His example is that there was the question for a long time in astronomy of "why are the planets in the orbits that they have?". All kinds of mechanisms were postulated and tested, in the early days there were attempts to link them to the Platonic solid. Turns out, there are some reasons why planets are not in certain orbits, Jupiter and/or Saturn and/or the Sun would develop a gravitational resonance with them and eject them from the Solar System or send them into the Sun, but outside of those special cases, there is nothing that governs that a particular planet will be in a specific orbit.