Ah I see, you were totally correct :). I got the same answer as it gave doing sqrt(1/((20/860)^2+1)) . Using a computer over a calculator to solve to significant digits helps too :). Usually I just used a calc and stared at the poster while waiting for the previous class to finish. Thanks a...
ah i see. I've never worked with such large numbers before so i didn't think that time dilation and length contraction could make such a large trip take so short, in the perspective of the space team. i'll try the quantative method once i have access to a computer or a cell phone...at the time...
Hello, recently I saw a poster with a clip from a magazine that had this situation and I was wondering if this is a completely impossible situation? Wouldn't you have to go several times the speed of light ?!
Suppose you wish to visit the red giant star Betelgeuse, which is 430 light years...