Respuesta :
Answer:
2.58 years.
Explanation:
- As the earth would be in 4.3 years approaching the space ship, thus to to find out the time the equation of
Δtr ⇒ Δto √1-v2 / c2
- i.e the relative time, observed tome and the velocity and light speed, will equal to time of 2.58 years as the velocity is 0.8 c.