it's not that big...

Space/Science » in reply to re: More beginnings, more endings

Adam — 8/24/2005 9:44:24 AM (archived)

Hi All

The observed expansion of 5m/cy (that's per century) means a mere 0.152% expansion of Earth's orbital radius over its lifespan - a mere 228,000 km. Comparable with the Earth-Moon system's +3.82 m/Cy. So no big deal... yet. In a few trillion years the planets will part company with the Sun if gravity's strength is changing.

Adam

The whole thread (9 posts)

How did it all begin? - ljk - 8/23/2005 8:24:18 PM
- More beginnings, more endings - ljk - 8/23/2005 8:34:26 PM
  - re: More beginnings, more endings - phil - 8/23/2005 8:38:54 PM
    - it's not that big... - Adam - 8/24/2005 9:44:24 AM
      - But over a long enough time period... - ljk - 8/24/2005 1:01:51 PM
        
        Interestingly... - Adam - 8/25/2005 1:03:54 PM
        
        Wouldn't the average metallicity of the entire universe increase with time? - SDF - 8/26/2005 12:12:29 AM
        
        Metallicity... - Adam - 8/26/2005 10:52:08 AM
        
        Don't like this Universe? Then just move to another one. - ljk - 8/25/2005 1:48:52 PM

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