Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not really even worth the $1 I paid for it at a garage sale...

I have to agree with the other 2-star reviewer--this video is corny and outdated. There are some interesting parts and pretty pictures, but most of it is pure speculation (the hypothetical Oort cloud and SETI, to give two examples) and rather melodramatic. I'm sure there are better space videos/DVDs out there. Guess I'll keep looking!