Straight Curves


Scientists found that microwave radiation left over after the Big Bang traveled in straight lines and never met, just like parallel lines in geometry. According to Einstein though, every mass creates its own disturbance in space. Scientists have found that the sun displaces light from distance stars due to its solar gravity. Further, signals from the Viking spacecraft on Mars provide further evidence for Einstein's theory. When Mars is on the opposite side of the Sun's edge, radio waves took longer to reach Earth meaning the radio waves had to travel 18 miles further away rather than follow a straight line.  This seems to support the old models of the universe as being shaped like a doughnut or saddle. If this is so, How would you know which way to go in order to visit a distance galaxy seen with a telescope?