Don't believe the bad reviews written about this show. They are exaggerated.
It is true that a few characters are annoying, but they only are that way to add to the drama.
What we have here is an Contact/Alien kind of thriller. It attempts to combine the horror of Alien with the exploratory part of Contact. And I think it does a good job.
Other shows like Origin and Nightflyers disappointed me badly, by turning sci-fi into a psychological drama. This does not. This stays sci-fi, just how I like it!