I enjoyed it, although not as much as most critics. I found it took a few episodes to hit its stride, and enjoyed the first and second seasons. At its heart it's a character drama, so if you're watching it only for the science interesting moments are few and far between.

Later episodes fall victim to lazy "a major catastrophe is about to occur, engineering team comes up with moonshot solution just in the nick of time to save the day" more often than I'd like. And the lesbian romance storyline seemed forced. I could barely finish the third season as it really went off the rails.