Can you recruit an extra crew?

Hello team,
first of all thank you for this wonderful game. Still in Alpha and it's a blast and so far challenging

I had a question to ask if i may. I searched the forum but did not find much unless i badly searched.

I boarded an alien vessel and they had an interstellar bed in one of the rooms. 
When i opened it, the human crew who was in his suit, stood for a second and died right away... no oxygen!
I loaded the game back to before going into the ship and when i cleared it, i tried to build an oxygen machine but i couldn't build anything on that ship.

Is there a way to get that crew alive or he is gone for ever?
Is it possible to recruit new crewmen in the future?
I am still in the first mission in Alpha.

Thanks!