astronomy-chat.net
Promoting astronomy discussion.



Main
Date: 09 Aug 2006 17:46:13
From:
Subject: Not like Pluto collision with Neptune...


Ok, just to get this straight, I know that Neptune and Pluto not
colliding unless an event of astronomical proportions (ya, that was a
pun) caused them to. It is because Pluto, even though their paths
cross, is 15 degrees "above" (This is relative to my mind, ok, can't
really explain it well) Neptune. But what if Neptune and Pluto, after
thousands/millions of years from now cross paths at their meeting
point, could their gravitation pull be strong enough even at that
distance? And furthermore, could they eventually become so close that
they collide? Please respond





 
Date: 10 Aug 2006 03:54:21
From: David Nakamoto
Subject: Re: Not like Pluto collision with Neptune...


wiiwiillwiin@gmail.com wrote:
> Ok, just to get this straight, I know that Neptune and Pluto not
> colliding unless an event of astronomical proportions (ya, that was a
> pun) caused them to. It is because Pluto, even though their paths
> cross, is 15 degrees "above" (This is relative to my mind, ok, can't
> really explain it well) Neptune. But what if Neptune and Pluto, after
> thousands/millions of years from now cross paths at their meeting
> point, could their gravitation pull be strong enough even at that
> distance? And furthermore, could they eventually become so close that
> they collide? Please respond
>
The motions of Pluto and Neptune are such that there is a gravitational
resonance between them, such that not only won't they come close to one
another (no more than 1 AU or more) but their paths actually keep them
away from one another.


 
Date: 09 Aug 2006 18:39:23
From: Don't Be Evil
Subject: Re: Not like Pluto collision with Neptune...



wiiwiillwiin@gmail.com wrote:
> Ok, just to get this straight, I know that Neptune and Pluto not
> colliding unless an event of astronomical proportions (ya, that was a
> pun) caused them to. It is because Pluto, even though their paths
> cross, is 15 degrees "above" (This is relative to my mind, ok, can't
> really explain it well) Neptune. But what if Neptune and Pluto, after
> thousands/millions of years from now cross paths at their meeting
> point, could their gravitation pull be strong enough even at that
> distance? And furthermore, could they eventually become so close that
> they collide? Please respond

http://www.nineplanets.org/plutodyn.html



 
Date: 09 Aug 2006 19:03:00
From: Greg Crinklaw
Subject: Re: Not like Pluto collision with Neptune...


wiiwiillwiin@gmail.com wrote:
> Ok, just to get this straight, I know that Neptune and Pluto not
> colliding unless an event of astronomical proportions (ya, that was a
> pun) caused them to. It is because Pluto, even though their paths
> cross, is 15 degrees "above" (This is relative to my mind, ok, can't
> really explain it well) Neptune. But what if Neptune and Pluto, after
> thousands/millions of years from now cross paths at their meeting
> point, could their gravitation pull be strong enough even at that
> distance? And furthermore, could they eventually become so close that
> they collide? Please respond

What makes most orbits in the solar system stable is that they are in
some sort of resonance with nearby bodies of significant mass. If the
above scenario could happen, given their respective orbital periods,
then Pluto wouldn't be where it is today.

-
Greg Crinklaw
Astronomical Software Developer
Cloudcroft, New Mexico, USA (33N, 106W, 2700m)

SkyTools: http://www.skyhound.com/cs.html
Observing: http://www.skyhound.com/sh/skyhound.html
Comets: http://www.skyhound.com/sh/comets.html

To reply take out your eye


 
Date: 09 Aug 2006 18:00:39
From: Martin R. Howell
Subject: Re: Not like Pluto collision with Neptune...


On 9 Aug 2006 17:46:13 -0700, wiiwiillwiin@gmail.com wrote:

> Ok, just to get this straight, I know that Neptune and Pluto not
> colliding unless an event of astronomical proportions (ya, that was a
> pun) caused them to. It is because Pluto, even though their paths
> cross, is 15 degrees "above" (This is relative to my mind, ok, can't
> really explain it well) Neptune. But what if Neptune and Pluto, after
> thousands/millions of years from now cross paths at their meeting
> point, could their gravitation pull be strong enough even at that
> distance? And furthermore, could they eventually become so close that
> they collide? Please respond


Sorry, but I can't seem to get a pulse here. Dor! Dor! The patient
poster is "flat-lining."

Hi. I am the dor and here is what I suggest. Don't cover his head with
a sheet. I would suggest to cover his head with a tin foil hat.

That'll be $500 for the advice. Most insurance plans are welcome. So is
cash.




--
Martin R. Howell

"The Astro Post"
www.theastropost.com

--
Posted via a free Usenet account from http://www.teranews.com