The series comes with an excellent plot, with sequences longer than necessary. I wondered why they would produce eight episodes when they could have done it in 6 or even shorter episodes.
It was annoying to see thriving plants in the dark place. I would go with that photosynthesis does not work or work differently in another universe, but on our Moon, oh please, that was a stretch without any meaningful impact.
I had a hard time relating to characters who acted like it was just another day at the office. I don't think I would be that calm for so long without freaking out after so many traumas in a short stay over there.