Question

How do you measure time in space?

Answer 1

Astronauts use the same type watches to measure time. Same time units are used in space by Men and women.

Explanation:

Initially mechanical chronographs were used in space flights.
Later quartz crystals also used.
See list of wacthes used by astronauts:

http://www.gq-magazine.co.uk/article/all-the-watches-worn-by-astronauts-in-space