Adam Majer wrote in a message to George Jiri Opletal:
GJO> What amuses me Adam, is that you introduce some extremely abstract idea
 AM> :)
GJO>without any scientific basis claiming which you claim is possible while
GJO>claiming impossible travel beyond our solar system with current spacetime
GJO>theories.  Firstly, if humans ever did go to the stars, under current
GJO>physical limitations it would be a one way journey.  U.F.O.s would more
GJO>likely represent short distance crafts used at the destination. 
GJO>Now for t primary craft, where are not impossibilities.  'Huge
GJO>accelerations' do not pose any problem...you can accelerate at 1g 
GJO>(and simulate earths gravity o your craft solving lots of potential 
GJO>physical complications) and accelerat up to the speed of light in 
GJO>around 1 year.  Time dilation can be a benefit and produces no 
GJO>problems on the one way trip...it can even be used to redu
GJO>the trip time. and finally collision between particles is not an
GJO>impossibl feat to overcome.  The density between the stars is about 
GJO>1 atom per cubic metre or so, hardly an impossibility for 
GJO>construction design.
 AM> First of all, when Columbus traveled to the West Indies he wasn't
 AM> thinking of a one way trip. Comunication is the bases of human
 AM> comunity and if it's eliminated, the comunity stops to exist. A one
 AM> way trip would couse just that. And you can't accelerate to c -
 AM> molecules breaking up and stuff can cause a problem :) I don't
 AM> think your exlonation has any scientific explonation basis either.
 AM> At a constant acceleration of 1g it would require tremondous
 AM> ammounts of energy at speed over 0.5c. And travelling at 0.99c, the
 AM> space get's compressed pretty much around the spacecraft (it's not
 AM> just the spacecraft that "compressed" due to speed but the entire
 AM> Universe is compressed as well - ie. for a photon, the Universe
 AM> doesn't exist; it  has 0 length :). This means that your 1atom/m3
 AM> of space actually get's pretty large - I can't provide you with a
 AM> value because I'm too lazzy to calculate it right now. :)
 AM> PS Relativity states that spacetime "compression" is relative to
 AM> the frame reference. For a spaceship a universe will not be
 AM> compressed but when you accound time dialation, the spacetime will
 AM> _appear_ to be compressed.
 AM>                 spacetime "compression" + time dialation = k <-
 AM> some constant 
This topic would be allowed in the BAMA echo if you both want to move it 
there.
Regards,
Roger
Roger.Nelson@f7.n3828.z1.fidonet.org 
--- timEd/2 1.10+
---------------