I loved this! I binged it in one sitting, and it had me metaphorically "on the edge of my seat." The characters had to work together under pressure and stress and I think the actors portrayed it wonderfully.
The only reason I'd give it 4 stars is because of the plotholes (those you can see by scrolling down in the reviews a bit.) But if you'd just like to watch a sci-fi show without caring about it being 100% facts (as most of the plotholes are very scientific related, a person who doesn't study space science/earth related science, such as myself, wouldn't really notice these inconsistancies) then this is definitely a show to watch. I'd give it a 4.5 if I could but google doesn't let you do that, haha.
Anyways, again, loved the show. I reccomend. (P.S. I personally like it in the French commentary with English subtitles, it conveys the emotions better.)