8/10
People criticizing about the show don't know the characters and the plot. Yes they are behaving like a bunch of kids because they have never received formal training like an astronaut but basic trainings on protocols/manual which has been mentioned on the series multiple times when the crew members were mocking Sasha. They are a bunch of people with superior talents selected to be on this mission. And yes now and then they will be on an emotional rollercoaster that will need strict mothering and Niko is doing a great job in that.
I don't know who gave it a low review but you must be a rookie and know nothing about sci-fi. Go back and watch Back from the Future and start over smh.