Continuity mistake: All the monitors aboard Discovery-1 are standard CRT screens of 1980s vintage (curved face), yet in "2001", they were all flat screens. and there's been no upgrading between the events of the two films.
2010 (1984)
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Directed by: Peter Hyams
Starring: Helen Mirren, John Lithgow, Roy Scheider, Bob Balaban
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2010 is the direct sequel to the Science Fiction drama 2001: A Space Odyssey where a mysterious alien Monolith has lead humanity to Jupiter's moon Io to discover the origins of life. A joint Soviet/American team goes out to investigate this as well as the "malfunction" of HAL, which caused the deaths of the prior crew, minus David Bowman. Less cerebral than its predecessor, 2010 adds a cold war edge to the discovery of the derelict ship, its contents and the fate of Mankind.
More mistakes in 2010
Walter Curnow: I feel so stupid. How do you say, 'stupid'?
Maxim Brajlovsky: Durak.
Walter Curnow: That's me.
Maxim Brajlovsky: You shouldn't feel like that. The same thing happened to me the first time I did this.
Walter Curnow: When have you ever done this before?
Maxim Brajlovsky: Never.
Trivia: While it's well-known the voice of HAL in "2001: A Space Odyssey" is Canadian actor Douglas Rain, who returned to reprise his role in this film, it's less known that the voice of SAL is credited to "Olga Mallsnerd" which is a false name used by none other than Candice Bergen. (00:14:05)
Question: One thing that always confused me is why was it necessary to jettison Discovery after it was used as a booster rocket? Why couldn't they just keep it attached to the Leonov as they made their escape?
Answer: They needed to lighten their load, to make it go faster. In Back to the Future Part III, after hijacking the train, the Doc and Marty unhooked the passenger cars to lighten the load.
Answer: If they didn't, any further manoeuvring would require much more fuel. They would be moving the mass of two ships.