Astrophysicist critiques ‘Gravity’ movie

>>> the new movie "gravity" is off to the biggest october opening in film history . reviewers agree it is a remarkable film achievement in 3-d and imax to boot. when the reviewer is an astro physicist with a twitter account, look out. dr. tyson tweeted things like nearly all satellites orbit east-west -- orbit earth west to east yet all satellite debris orbited east to west . he also said this. mysteries of gravity, why sandra bullock 's hair in otherwise convincing zero g scenes didn't float freely on her head. and why is bullock, a medical doctor , servicing the hubble space telescope . to the rest of us it's a cool movie about