A certain star is 18.6 light years away,
a. Find how long would it take a spacecraft traveling .950c to reach that star from Earth as measured by observers on earth?
b. Find how long would it take a spacecraft traveling .950c to reach that star from Earth as measured by observers on the spacecraft
c. Find what distance is travelled according to those on the spacecraft?
d. Find what will the spacecraft occupants compute their speed to be from the results of b and c?