The Naked Scientists

The Naked Scientists Forum

Author Topic: What is the evidence for the solar system?  (Read 1050 times)

John Paul

  • Guest
What is the evidence for the solar system?
« on: 30/09/2011 22:01:02 »
John Paul asked the Naked Scientists:
   
What evidence has lead scientists to conclude that the earth is one member of a solar system consisting of other planets?

What do you think?
« Last Edit: 30/09/2011 22:01:02 by _system »


 

Offline damocles

  • Hero Member
  • *****
  • Posts: 756
  • Thanked: 1 times
    • View Profile
What is the evidence for the solar system?
« Reply #1 on: 01/10/2011 05:18:20 »
Umm...

Initially I suppose the evidence comes from the observed behaviour and motions of the other planets in the sky: both the positions and the observed phases (Mercury and Venus seen a crescent through full disk, but smaller as they get fuller; outer planets only ever seen in a variety of gibbous phases)

But the strongest evidence surely comes in the fact that both American and Soviet teams were able to successfully target and deliver payloads to other planets along complicated trajectories that were calculated according to this assumption. Space is so vast and empty there is no chance that they could have arrived at a target planet if the underlying assumptions at this very basic level were wrong.
 

The Naked Scientists Forum

What is the evidence for the solar system?
« Reply #1 on: 01/10/2011 05:18:20 »

 

SMF 2.0.10 | SMF © 2015, Simple Machines
SMFAds for Free Forums