There is now widespread agreement about the age of the Universe and the accelerating rate of its expansion. These recent insights are making cosmology into a precise science. One of the consequences is a better understanding of the motion of galaxies over cosmic time. This talk examines the history of cosmic expansion and its implications for remote galaxies.
The more distant a galaxy the greater its speed of recession. How far away must a galaxy be to travel faster than light? Can we see such galaxies now? Will we be able to see them in the future? And, if so, how?