[填空题]
A certain star is 10. o f*/xms;cxm.6 light-years away. How long would it ulr85baekog xkw54 ,./nz)eljo 9u8t take a spacecraft traveling 0.960c to reach that star from Earth, as meas b5au5tu8l9ooe8kz.),en4 rwk gjx/l ured by observers:
(a) on Earth, $t_{earth}$ = yr
(b) on the spacecraft? $\bigtriangleup t_0$ = yr
(c) What is the distance traveled according to observers on the spacecraft? L = ly
(d) What will the spacecraft occupants compute their speed to be from the results of (b) and (c)? v = c
