- #1

- 95

- 7

- Homework Statement
- One twin is on the Earth's surface, at water level. The other is in the ISS 408km above Earth's surface. If they are separated for one year, how much longer does the twin on Earth age?

- Relevant Equations
- ##t= \frac {t_0}{\sqrt{1- \frac{2 \gamma M}{rc^{2}}}}## (Edited)

Where r is the distance from the centrum of Earth. The answer is supposed to be 0.007 sec

Using the above formula I get that the time goes 6.5∗10−86.5∗10−8 percent faster in ISS. Thus, this is approximately 2 seconds in a year. But the answer is much lower. Where am I making a mistake?