3 ms·
More on this at: http://en.wikipedia.org/wiki/Double_planet http://en.wikipedia.org/wiki/Double_planet
by mturmon 15y ago
More on this at:
http://en.wikipedia.org/wiki/Double_planet http://en.wikipedia.org/wiki/Double_planet
- dalke 15y agoand http://en.wikipedia.org/wiki/Natural_satellite#The_definition_of_a_moon http://en.wikipedia.org/wiki/Natural_satellite#The_definitio...