I have enjoyed this hypothetical drama of the exploration of Mars. Season one was very enjoyable. At the time I gave it an 8 out of 10. I was very excited for season two, only to find that the amount of preachiness was significantly amped up. I can't get past the preachy aspect of season two, so I have dropped my review down to a 6 out of 10. Hopefully season 3 goes back to the glory of season 1.