Posted by britney on .
A deep space probe moves away from the earth with a speed of 0.75c. An antenna on the probe requires 3.00s probe time to rotate through 1 revolution. How much time is required for 1.00 rev according to an observer on Earth?

Physics 
Elena,
β =0.75
t = tₒ/sqrt(1β²) =
= 3/sqrt(10.75²) =4.54 s.