What are the space enemies or environmental hazards in the astronauts inspace surviving the extremes?

the lack of oxygen a crack in their helmet could result in immediate death limited tools and limited amount of astronauts would result in death aswell they only get one chance to fix something and one ship if one thing fails everything fails

in 342 bc j._c. egypt fell into the hands of the persians, under the reign of nectanebo ii

greek city-states unite in a revolt against the persian empire at the beginning of the fifth century bc. j.-c  

from the year 660 or 659 bc ad, cyrus preached the revolt against the medes to deliver the persians.

what's this it's not giving you what have to do.