Neil DeGrasse Tyson fact-checks science of 'Gravity'

Here: The "CBS This Morning" co-hosts questioned Neil deGrasse Tyson's review of the Hollywood blockbuster 'Gravity.'

Tyson, director of the Hayden Planetarium, defended his Twitter critiques, but praised the film.

Have you seen 'Gravity'?

Here are some of Neil DeGrasse Tyson's tweets:

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