Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent and thought-provoking

Loved this double-header episode, which used findings from the latest and greatest NASA planetary and space probes to give the viewer a virtual tour of Mercury, Venus, Mars, and several of the moons of Jupiter and Saturn. The script and interviews with various scientists provide thought-provoking speculation on the natural of possible extraterrestrial life and the conditions under which it might arise. I found it enthralling viewing.