3/10: that's 9/10 for visuals and 1/10 for script. Whether this, or that, could really happen up there in orbit is, for me, beside the point. Sit back, suspend your disbelief, and enjoy! But, as a British viewer, I am yet again appalled at the mawkishness of the script in an American movie (yes, I should be used to it by now - but it always shocks me). Are Americans REALLY this sentimental?? ("I larve you Marmmee" says cute, (dying), 3 year-old girl (preferably Shirley Temple look alike) and audience are instantly reaching for their hankies!). I can't believe it. My American friends are not like this - though that said, I have never seen them in a cinema! Suffice it to say that I stuck it out to the end for the visuals. And S.B. wasn't at all bad, given what she had been given to say. But I would never want to see it again, unless fully dosed up on anti-emetics.