Aliens

Post general questions and discuss issues related to climbing.
User Avatar
mrh

 
Posts: 2064
Joined: Fri Sep 10, 2004 2:31 pm
Thanked: 511 times in 301 posts

by mrh » Wed Dec 16, 2009 10:20 pm

Its easy, just jump in a worm hole. Didn't you guys see Contact?

User Avatar
Ejnar Fjerdingstad

 
Posts: 7512
Joined: Wed Dec 21, 2005 5:34 am
Thanked: 1552 times in 973 posts

by Ejnar Fjerdingstad » Wed Dec 16, 2009 10:22 pm

Husker wrote:
Ejnar Fjerdingstad wrote:
kolbi2112 wrote:Seriously.....assuming the earth is the only life-supporting planet in our solar system, the next closest system is about 4 light years away (or 40 trillion kilometers). Doesn't seem very likely that we've had any visitors.....

EDIT: 40 trillion kilometers


Unless they invented some kind of faster-than-light spaceship. There was an article in Science once, claiming that was theoretically possible!


According to Einstein form his E=mc2- as you approach the speed of light, both mass and length increase and approach infinite. Therefore not possible.


Yes, but the man had some very complicated mathematical argument that I didn't understand about it being possible to make a kind of envelope around the spaceship that isolated from these effects. Anyway, I saw in a recent Scientific American that somebody in trying to make gravity fit quantum mechanics had found that this could be done if one assumed a Newtonian universe (in which of course these weird relativistic effects would not exist). It is a well-known fact that relativity and quantum mechanics can't both be completely true (in their present form, at least).

User Avatar
JDrake

 
Posts: 51
Joined: Wed Dec 20, 2006 6:14 pm
Thanked: 0 time in 0 post

by JDrake » Thu Dec 17, 2009 12:20 am

Day Hiker wrote:The place is just so big -- so unpopulated and so spread out -- almost as bad as Pahrump, Nevada. The likelihood of finding intelligent life is about the same to.



http://www.pahrumpnv.biz/town/index.php ... e&Itemid=1

I cannot allow the fine city and people of Pahrump to be disrespected so. Have at you man!

:lol:

User Avatar
mrh

 
Posts: 2064
Joined: Fri Sep 10, 2004 2:31 pm
Thanked: 511 times in 301 posts

by mrh » Thu Dec 17, 2009 12:27 am

My wife has relatives in Pahrump. Day Hiker speakes the truth.

User Avatar
calebEOC

 
Posts: 518
Joined: Tue Jun 21, 2005 3:47 pm
Thanked: 0 time in 0 post

by calebEOC » Thu Dec 17, 2009 3:35 am

http://en.wikipedia.org/wiki/Project_Daedalus

Reading about project Daedalus makes me think that if our society was sufficiently motivated to undertake interstellar travel it would be possible to reach nearby stars. The interesting thing here is that at 10% the speed of light a craft could reach the nearest star in 50 years. So why couldnt a more advanced society reach earth? I think they absolutely could.

User Avatar
IagosGhost

 
Posts: 1185
Joined: Mon Jan 08, 2007 4:45 pm
Thanked: 141 times in 89 posts

by IagosGhost » Thu Dec 17, 2009 3:50 am

When my oldest daughter was about 4 or 5 years old she used to call them a-wee-ins. 8)

User Avatar
Charles

 
Posts: 14939
Joined: Fri Jan 09, 2004 9:20 am
Thanked: 1171 times in 865 posts

by Charles » Thu Dec 17, 2009 9:57 am

IagosGhost wrote:When my oldest daughter was about 4 or 5 years old she used to call them a-wee-ins. 8)

sweet! :D

User Avatar
Big Benn

 
Posts: 6593
Joined: Sat Oct 16, 2004 4:50 am
Thanked: 1519 times in 947 posts

by Big Benn » Thu Dec 17, 2009 12:55 pm

mrh wrote:Its easy, just jump in a worm hole. Didn't you guys see Contact?


Great film. Sad there has never been a Contact 2

User Avatar
Ejnar Fjerdingstad

 
Posts: 7512
Joined: Wed Dec 21, 2005 5:34 am
Thanked: 1552 times in 973 posts

by Ejnar Fjerdingstad » Thu Dec 17, 2009 2:00 pm

calebEOC wrote:http://en.wikipedia.org/wiki/Project_Daedalus

Reading about project Daedalus makes me think that if our society was sufficiently motivated to undertake interstellar travel it would be possible to reach nearby stars. The interesting thing here is that at 10% the speed of light a craft could reach the nearest star in 50 years. So why couldnt a more advanced society reach earth? I think they absolutely could.


Very sensible post! And during these fifty years one might well become able to keep them in suspended animation, much like animals that hibernate!

Previous

Return to General

Who is online

Users browsing this forum: No registered users and 0 guests