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.
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.
by calebEOC » Thu Dec 17, 2009 3:35 am
by IagosGhost » Thu Dec 17, 2009 3:50 am
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.
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