Some spoilers ahead.

It was fantastic, but very long -- seems to be a theme for his novels. I find myself thinking about it now even all this time later. It does feel like the whole science vs. anti-science theme kinda got slipped in towards the second half of the novel as a plot device and it felt weird at times tbh, but I did think it was poignant. The big climax with the Apollo 18 mission didn't hit me as hard as Pope sharing his memory of Claggett with his class afterwards.