View Single Post
  #6  
Old 29-11-2021, 12:44 PM
multiweb's Avatar
multiweb (Marc)
ze frogginator

multiweb is offline
 
Join Date: Oct 2007
Location: Sydney
Posts: 22,080
Quote:
Originally Posted by Stonius View Post
This is what I'm getting at - I thought orbits were a function of mass and velocity?


How can Jupiter change orbits without changing its mass or velocity?


How can the additional mass of an extra moon *not change the earth's orbit?


Given such a large impact, I'm amazed our orbit isn't more eccentric.


But maybe, as you say, we have Jupiter to thank for that. But even so, presumably the earth would have been in a different orbit pre-Theia?



Markus
Orbits changed because the sun output changed a few times at the very beginning if I recall it was colder then got hotter.
Reply With Quote