Posted by:
Nick Humphrey
(
)
Date: November 24, 2010 04:59AM
Peter Wrote:
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> archaicoctober Wrote:
> --------------------------------------------------
> The argument that microevolution is valid, but
> macroevolution is invalid is like observing a
> penny fall from a 2 story building and concluding
> that if a penny is dropped from the empire state
> building, it will fall for 2 stories, then stop
> falling mid flight. Thus, "microgravity" is true,
> and "macrogravity" is not true.
that is a really cool analogy, but how would you respond if someone said "well what if you drop a penny from 190 miles up?"
i'll give you the answer:
"The gravitational field ... extends to an infinite distance; gravity does not cease to act at any altitude. A spacecraft is said to be weightless when it is in orbit around the earth (or around any other celestial body) because the centrifugal effect (which acts away from the center) is then equal and opposite to the force of gravity. Under these conditions, objects in a spacecraft seem to float in space. In the same way, the moon does not fall toward the earth because of the centrifugal effect that balances the force of gravity."
http://answers.yahoo.com/question/index?qid=20070917151236AATaiSy