[quote=Aerith's Knight;2650418][quote=Darkswordofchaos;2650413The distances in space are.. too large to be able to envision. Let's say for example a civilization, which is advanced and capable, takes the 200.000 year trip at 0.3 the speed of light(as to counter relativistic effects) to earth. If human kind only had the potential to actually speak with them for 10.000 years, what chance do you think those aliens would have to arrive in that period?

If the trip takes 20 times the duration of our civilization, they'd have to be really lucky in picking out the departure time.[/quote]

I think that a specices advanced enough to even attemt a voage that far would have at the least developed the ability to travel at near light speeds. and that is if they havent devised a way to stabalize worm holes in wich case they could travel the span of the universe in a matter of years.