Small text iconNormal text iconLarge text icon

INTERACTION

 FAQFAQ   SearchSearch   MembersMembers   GroupsGroups   RegisterRegister 
 User Control PanelUser Control Panel      LoginLogin 


All times are UTC




Post new topic Reply to topic  [ 3 posts ] 
Author Message
PostPosted: Mon Nov 26, 2007 11:54 am 
Offline
User avatar

Joined: Wed May 02, 2007 8:30 pm
Posts: 371
Location: Barnsley, England
Finding science related news stories for display boards at school, I found this story about the Moon being a rare thing on the BBC.

My question for debate is this: Last time I read anything into the start of life, the Moon and the tides that it causes were considered to be pretty important. So does the fact that a nice 'round' moon is a rare thing affect the formation of life in the Universe as I would expect? Do we have to start relying on our fictional planets having captured asteroids so that we can explain life?

_________________
Jo Thomas
http://www.journeymouse.net/


Top
 Profile  
 
 Post subject:
PostPosted: Mon Nov 26, 2007 12:51 pm 
Offline

Joined: Mon Feb 26, 2007 3:11 pm
Posts: 2122
Location: Cheshire, UK
Not sure we know but moons are common in the solar system so you might have earthlike moons rather than earthlike planets and you would get tides, maybe big tides.

Also tides might help life 'colonise' the land areas but life evolving in any seas should still be possible.

Storms and weather might replace tides to some extent so life might still move from sea to land but via rivers or storm surges and maybe it would take a billion years longer to do so.

We have 'flying fish' and given the aeons maybe they would evolve into birdlike creatures and move onto the land. Evolution is a powerful force for change.


Top
 Profile  
 
 Post subject:
PostPosted: Fri Nov 30, 2007 11:49 am 
A planet with a moon or moons is more stable in terms of rotation, orbit etc than one without - that's what may have helped life. I don't think anybody believes a moon is a prerequisite for life though.


Top
  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 

All times are UTC


Who is online

Users browsing this forum: No registered users and 4 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB® Forum Software © phpBB Group