Blogical Messages 26 Reaction score 0 Thread starter Jul 3, 2012 #1 Appear refers to a ground observer, the answer should be physically sound not just some fancy sci-fi!
Appear refers to a ground observer, the answer should be physically sound not just some fancy sci-fi!
D H Staff Emeritus Science Advisor Homework Helper Insights Author Messages 15,524 Reaction score 771 Jul 3, 2012 #2 Spacecraft cannot move faster than c. Thread closed.