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Submission + - Space Film "Gravity": Can Science-Fiction Ever Get The Science Right? (bbc.co.uk) 1

dryriver writes: The BBC reports: "The relationship between science and science fiction has always been tempestuous. Gravity focuses on two astronauts stranded in space after the destruction of their space shuttle. Since Gravity's US release (it comes to the UK in November) many critics have praised the film for its scientific accuracy. But noted astrophysicist Dr Neil deGrasse Tyson, director of the Hayden Planetarium at the American Museum of Natural History in New York, had several issues with the accuracy of Gravity's portrayal of space. Through a series of posts on Twitter, Tyson — who later emphasised that he "enjoyed the film very much" — highlighted various errors. He noted the Hubble space telescope (orbiting at 350 miles above sea level), the International Space Station (at 250 miles), and a Chinese space station could never be in line of sight of one another. On top of that, most satellites orbit west to east, yet in the film the satellite debris was seen drifting east to west. Tyson also noted how Sandra Bullock's hair did not float freely as it would in zero-gravity. This is arguably not so much an error in physics, but a reflection of the limitations of cinematic technology to accurately portray actors in zero-gravity. That is, of course, without sending them into space for the duration of the film. The Michael Bay film Armageddon is known for its woeful number of inaccuracies, from the space shuttles separating their rocket boosters and fuel tanks in close proximity to each other (risking a collision) and to objects falling on to the asteroid under a gravitational pull seemingly as strong as the Earth's. More than one interested observer tried to work out how big the bomb would have to be to blow up an asteroid in the way demanded in the movie. Answer: Very big indeed. Nasa is reported to have even used Armageddon as part of a test within their training programme, asking candidates to identify all the scientific impossibilities within the film.

Comment Re:"what is necessary to be done" (Score 1) 461

"good intelligence" is not spying on everyone. They had to have been selective about who they spied on, and eventually the records and full accounting of what they did became public. With the current surveillance state, the records are sealed permanently, and if they are to be revealed, they are first screened by those who have most to lose from revealing the full nature of what has been done. In the incredibly rare event that elected officials become involved, the bureaucrats are authorized to lie, keep secrets, and hold closed-door meetings. Additionally, with this level of data acquisition, it is reasonable to assume that some amount of blackmail and extortion will occur. This is not 'oversight'. At the very least, oversight should include an expiration date of sealed operations activities that is far enough into the future that it won't threaten the operations, but near enough that it will threaten those who are involved in the operations such that they will follow the publicly known guidelines.

Comment Re:Wow ... (Score 1) 190

Yes, I believe them. They never lied to me one single time in the Naval Nuclear Power Program. I worked on the plants. I know how the plants work. Kind of hard to tell me lies about things I'm going to work on and maintain. The amount of radiation leaking out is insignificant, and everything I've ever read states that the radiation actually measured is the same as background radiation, however, I'm skeptical of how they measure radiation at such depths. When we checked for contamination, we used handheld detectors to check every surface, which isn't possible at those depths, so I imagine the best they can do is measure radioactivity of the vicinity, which would make sense that they wouldn't find the minute traces of radioactive particles leaking and then dispersing.

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