Closest thing to being there ... I'm an astronomy and space flight buff painfully aware of some of the impossibilities/implausibilities used to drive the film, and for those flaws can only rate it as an "8". But those complaints aside ... will I ever be closer to being in orbit? No. It felt as if I were. Surrounded by the infinity of space; the earth like a glittering jewel nearby; completely alone and unreachable; the pleasure of "swimming" through a spacecraft in microgravity ... it was overwhelming.
Clooney is well, Clooney - capable, calming, in control, bringing humor, sanity, and perspective to chaos. Bullock is heartwarming and heartbreaking at the same time, bringing us into her world with her fears, uncertainties, terror, and past loss that haunts her present.
I've seen this three times in 3D (first time on an IMAX screen). GO see it before it leaves the big screen. You will not regret it.