I watched the film on Bluray for the second time last night and two scenes got me confused. I know there was some dodgy science reported by various critics at the time, but did the film makers make such critical errors? In the scene where Clooney is attached to Sandra Bullock who in turn is attached by her foot on one of the parachute ropes, what force is making him pull away from her? He ...
Two identical empty gas cylinders side by side. One is filled with Air and the other with Helium, is the latter now lighter than the former, after the fillings....Dentists eh? Pressures are also the same!
When calculating the mass and missing mass of the uni verse, do the calculators take into account the mass/missing mass of the microscopic and their interactions, as well as the massive and their interactions?
Is it right to say that; in every direction that we look into the sky from earth, we are looking into the past? Does that make our vantage point always in the present? Can there be no direction which we look at that is not in the past?