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Talk:Counterexamples to an Old Earth (view source)
Revision as of 15:25, June 23, 2010
, 15:25, June 23, 2010→Receding Moon: new section
::::Getting from this to ''The planetary orbits in the solar system - including Earth's - are unstable and unsustainable over the very long time periods asserted by atheists'' or ''The basic counterexample that planetary orbits are unstable and chaotic is not refuted by anything factual'' is quite surprising.
::::Getting from this to ''The planetary orbits in the solar system - including Earth's - are unstable and unsustainable over the very long time periods asserted by atheists'' or ''The basic counterexample that planetary orbits are unstable and chaotic is not refuted by anything factual'' is quite surprising.
::::[[User:FrankC|FrankC aka ComedyFan]] 09:50, 22 June 2010 (EDT)
::::[[User:FrankC|FrankC aka ComedyFan]] 09:50, 22 June 2010 (EDT)
== Receding Moon ==
''The moon is receding from the Earth at a rate suggesting it would have been too close a billion years ago ''
What's ''too close''? [http://eclipse.gsfc.nasa.gov/SEhelp/ApolloLaser.html According to NASA], the current rate is 3.8 cm/year<ref>[http://eclipse.gsfc.nasa.gov/SEhelp/ApolloLaser.html Measuring the Moon's Distance] ''Apollo Laser Ranging Experiments Yield Results'' by Fred Espenak, GSFC Planetary Systems Laboratory (LPI Bulletin, No. 72, August, 1994.)</ref>. If we assume that this rate is constant, than it gained over the last billion years:
'''1,000,000,000 year × 3.8cm/year = 3,800,000,000cm = 38,000,000m = 38,000km'''
That roughly 10% of the current mean orbital radius of the [[Moon]] of 378,000km!
But the [[Roche limit]] of the system Earth-Moon is 18,000km - even 5 billion years ago the moon would not have been within this critical region.
[[User:FrankC|FrankC aka ComedyFan]] 11:25, 23 June 2010 (EDT)