FRDB Archives

Freethought & Rationalism Archive

The archives are read only.

Go Back   FRDB Archives > Archives > IIDB ARCHIVE: 200X-2003, PD 2007 > IIDB Philosophical Forums (PRIOR TO JUN-2003)
Reload this Page need help debunking argument against evolution
Welcome, Peter Kirby.
You last visited: Today at 05:55 AM
Search

 
Page 5 of 5 « First 34 5
 
Thread Tools Search this Thread
Old 07-20-2002, 10:32 PM   #41
Veteran Member
 
Join Date: Jul 2002
Location: US east coast. And www.theroyalforums.com
Posts: 2,829
Post
Thank you! Looks like an interesting forum.
Albion is offline  
Old 07-20-2002, 10:36 PM   #42
Veteran Member
 
Join Date: Jul 2001
Location: Seattle
Posts: 4,261
Post
Quote:
Originally posted by Albion:
<strong>Thank you! Looks like an interesting forum.</strong>
Feel free to introduce yourself <a href="http://iidb.org/cgi-bin/ultimatebb.cgi?ubb=forum&f=43&SUBMIT=Go" target="_blank">here</a>. Plus, it's a good place to learn about us crazy infidels and why we are here.

Enjoy the boards!
scigirl is offline  
Old 07-20-2002, 11:54 PM   #43
Veteran Member
 
Join Date: Aug 2001
Location: St Louis MO USA
Posts: 1,188
Post
Quote:
The whole planetary system would collapse if one single planet's orbit crossed another planet's.
And since that doesn't happen... here we are.

Quote:
It would collapse because they would collide.
Probably has happened to billions of unlucky babyplanets as solar systems have formed.

Quote:
So how by chance did all of the planets end up on the same plane, rotating in their own orbit, without crossing another planet's orbit?
"All" the planets? There might have been others which weren't orbiting 'correctly' or which collided with other planets or asteroids. However, they are not here. The planets that remain have orbits that don't cross. If they did cross they wouldn't have remained.
cricket is offline  
Old 07-21-2002, 12:47 AM   #44
Senior Member
 
Join Date: Apr 2002
Location: Des Moines, Ia. U.S.A.
Posts: 521
Post
Quote:
<strong>So how by chance did all of the planets end up on the same plane, rotating in their own orbit, without crossing another planet's orbit? </strong>
There is of course an entire asteroid "belt" which encircles our solar system between Mars and Jupiter, thus separating what we call the "inner planets" from the "outer planets".

This asteroid belt could very possibly be the remains of planets that did cross orbits.
wordsmyth is offline  
Old 07-21-2002, 02:08 AM   #45
Veteran Member
 
Join Date: Aug 2001
Location: St Louis MO USA
Posts: 1,188
Post
Yes. And as for the remainder of our solar system's planets, here's what Dawkins says in The Blind Watchmaker

Quote:
Our solar system is a stable arrangement of planets. The nearer a satellite is to the sun, the faster it has to travel to remain in orbit, and there is only one speed it can travel and remain in orbit. At any other velocity it would either move out into deep space or crash into the sun or move into another orbit. Lo and behold, every single planet in our system is travelling at exactly the right velocity to keep their orbits. A miracle of conscious design? No, just another natural 'sieve'. All the planets we see must be travelling at exactly the right speed, or they wouldn't be there!
cricket is offline  
Old 07-21-2002, 03:19 PM   #46
Veteran Member
 
Join Date: Mar 2001
Location: Orient, OH USA
Posts: 1,501
Wink
Welcome to the forum, Albion...

Bubba
Bubba is offline  
Old 07-21-2002, 04:59 PM   #47
Senior Member
 
Join Date: Nov 2000
Location: Baulkham Hills, New South Wales,Australia
Posts: 944
Post
Quote:
Originally posted by cricket:
<strong>

"All" the planets? There might have been others which weren't orbiting 'correctly' or which collided with other planets or asteroids. However, they are not here. The planets that remain have orbits that don't cross. If they did cross they wouldn't have remained.</strong>
The planets wouldn't have remained, but the bits left over do. Our moon is one of the bits.
KeithHarwood is offline  
Old 07-21-2002, 05:08 PM   #48
Senior Member
 
Join Date: Nov 2000
Location: Baulkham Hills, New South Wales,Australia
Posts: 944
Post
Quote:
Originally posted by wordsmyth:
<strong>

There is of course an entire asteroid "belt" which encircles our solar system between Mars and Jupiter, thus separating what we call the "inner planets" from the "outer planets".

This asteroid belt could very possibly be the remains of planets that did cross orbits.</strong>
Nope. There isn't enough material to make a planet. General opinion is that Jupiter was always big enough to disrupt any accumulation that could lead to a planet forming that close. However, there is quite a lot of chemical differentiation among the asteroids, so it is quite possible that some of the asteroids are ejecta from collisions occurring much closer in to the sun.
KeithHarwood is offline  
Old 07-21-2002, 08:04 PM   #49
Veteran Member
 
Join Date: Jul 2002
Location: US east coast. And www.theroyalforums.com
Posts: 2,829
Post
Thank you, Bubba! SciGirl, I'll go and check out that other board, thanks for the help.
Albion is offline  
 
Page 5 of 5 « First 34 5

« Previous Thread | Next Thread »
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Forum Jump


All times are GMT -8. The time now is 08:41 PM.

Top

This custom BB emulates vBulletin® Version 3.8.2
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.