is it possible to prove that planets (and/or stars) are always round (elliptical if you consider the spin)? Is there a set of equation that demonstrate that fluids (after all, molten rocks "floating" in outer space is that...) tend to form spheres? Maybe theres a way to prove that they can't exist (in a stable condition) in another shape?
Asked
Active
Viewed 59 times
1
-
http://en.wikipedia.org/wiki/Dwarf_planet – mmesser314 Mar 24 '15 at 13:31
-
Possible duplicates: http://physics.stackexchange.com/q/107584/2451 and links therein. – Qmechanic Mar 24 '15 at 13:54
-
1The minimum (gravitational) energy configuration for a drop of molten rock corresponds to a spherical shape. – Johannes Mar 24 '15 at 13:58