Notices
Results 1 to 4 of 4

Thread: model

  1. #1 model 
    Forum Sophomore
    Join Date
    Feb 2008
    Posts
    111
    1.is there any mathematical model which predicts the number of moons orbiting around a planet?
    2.why do the planets inside the asteroid belt have different chemical composition than the Jovian planets jupiter,saturn,uranus,neptune?
    3.does atmosphere density have anything to do with gravity of a celestial body?


    Reply With Quote  
     

  2.  
     

  3. #2  
    Forum Senior
    Join Date
    Apr 2008
    Posts
    354
    1. Short answer, no. There are computer sims of how our own moon was created, but the incredible chain of events that leads to a planet having a moon (or not) is too complex to generalize.

    2. Our Sun emits a solar wind. In the early solar system when the Sun "switched on” this wind was very strong and caused any clouds of light gas to move outward away from the Earth and beyond Mars. These clouds were then captured by the gravity of the outer planets, which became ‘gas giants’. Thus the inner planets have more heavier elements.

    3. Yes and no. A planet’s gravity has a lot to do with it, for instance Mars lacks enough mass to maintain an atmosphere like the Earth’s. Even if terraformed, Mars would just lose any synthetic atmosphere over time. Venus, however, has nearly the same mass as the Earth, but has an incredibly dense atmosphere as a result of ancient volcanism.


    Reply With Quote  
     

  4. #3  
    Time Lord
    Join Date
    Apr 2008
    Posts
    5,328
    Quote Originally Posted by Arch2008
    2. Our Sun emits a solar wind. In the early solar system when the Sun "switched on” this wind was very strong and caused any clouds of light gas to move outward away from the Earth and beyond Mars. These clouds were then captured by the gravity of the outer planets, which became ‘gas giants’. Thus the inner planets have more heavier elements.
    I hadn't known that. Well put. Thanks.
    Reply With Quote  
     

  5. #4  
    Forum Senior
    Join Date
    Apr 2008
    Posts
    354
    My pleasure!
    Reply With Quote  
     

Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •