### Re: LONG ELLIPSE Orbits (was Re: Hale-Bopp THEN and NOW)

Article: <5fa2db\$m65@sjx-ixn2.ix.netcom.com>
From: saquo@ix.netcom.com(Nancy )
Subject: Re: LONG ELLIPSE Orbits (was Re: Hale-Bopp THEN and NOW)
Date: 1 Mar 1997 20:09:15 GMT

In article <AQstUpA4GkFzEwcl@spacetime.demon.co.uk> Chris Lawrence writes:
>> Don't return and say the comet is drawing an ellipse in the
>> sky. It's not a CAD program nor is it taking a geometry
>> quiz in high school. It doesn't have a second focus drawn
>> in the sky as a guide to follow.
>> ZetaTalk[TM]
>
> It doesn't need a second focus any more than it needs two
> drawing pins and a bit of string. ... It "moves sideways"
> because that's the only part of its motion left at that point.
> The other part, the part which takes it further from the sun
> has just been slowed and finally halted before it moves
> closer again.
> Chris Lawrence <chris@spacetime.demon.co.uk>

(Begin ZetaTalk[TM])
Wrong. Motion is forward in a straight line unless a SECOND FORCE is interjected. Curves are a combination of more than one force. Your orbiting planets would move in a straight line, going out of what you call the Solar System, were they not held back by their gravitational attraction to the Sun.

You are clinging to this notion because your teachers TOLD you that long period comets move in an ellipse, along with a lot of other contradictory theories. University professors can't even line up with each other, so simply teach contradictions. Astronomers do likewise, chopping everything up into bits so that any given bit seems to make sense, as trying to reconcile all their notions with each other sets them to screaming arguments. Your laws of motion state that motion is in a straight line. Your laws of gravity state that objects approach each other directly. Elliptical orbit laws simply mathematically describe an ellipse, and in the case of long period ellipses ARE IN CONTRADICTION to the first two laws we mentioned.

Look to your Olympic decathlon games, where a heavy weight is held BACK for its forward motion by the hand of the twirling athlete. He lets loose of the metal disc and it moves in a straight line to the target area, does NOT curve, does NOT retain the prior curve in memory somewhere to be perpetuated.
(End ZetaTalk[TM])

In article <5f7mf3\$grq@news.ccit.arizona.edu> Jim Scotti writes:
> It is therefore the objects momentum which keeps it moving
> around the sun until it finishes its outward motion and it
> pulled (by the suns' gravity) back towards the sun,
> reappearing on the other side, inward bound. The
> "centrifugal force" is a fictitious force which is also
> radially directed along the line connecting the object and
> the body it is orbiting (be it by a string if you are slinging