Great, fun and historic film. Even though it's not based on a true story, it reminds us of how far we have come in space exploration. The performances of Scarlet Johansson and Tatum Channing are superb -- as is the chemsitry between them. The movie steadily builds to it's dyanmic climax and gives us a front seat view of the political and social climate of the 60s. It's a good time movie.