Oh dear, where do i start? While i was really excited for the premise of a mars colony series, this isn't what i was hoping for.
At first the documentary-style segments give it an authentic feel. Yet after a while it really interferes with the pacing of the story. Whenever the situation gets dramatic, there is a cut to Elon Musk or Neil Degrasse Tyson blue-balling us with another scientific explanation. They should have stopped this after the first episode, as it really comes across as filler after that.
What i also couldn't take was the huge character discrepancy between the real life astronaut and his fictional counterparts. While Scott Kelly is a warm and controlled guy, who takes the one-year- separation from his family in a laid-back "it's my job"-attitude, the protagonists of the series seem to get emotional at the slightest mishaps. Add to that the fact they act more like teenagers than professionals with decades of experience.
And finally this seems like the worst space voyage in human history. A blind and hesitant ground control, hardly any reserves, moronic hiring philosophy... If any real mars trip would be happening like this, they would fire the management and drop the whole project.