Gilles wrote:With that, your mass increases, and so does the mass of your fuel. Without breakings (consider vacuum), you will still be able to use the fuel, to gain speed.
PWrong wrote:A particle is moving towards a planet at 0.98 c. The planet measures the distance between them to be 45 km. What is the distance as measured by the particle?
houserichichi wrote:The key portion of Hawking's writing is "assuming the 3D is curved." If space is not curved then a straight line would be the fastest way.
("straight" meaning the every day Euclidean version of the word)
faranya wrote:Now, if you could travel at the speed of light, even if you don't go faster than it, you wouldn't be able to see would you?
thigle wrote: what about gamma rays ? ... aren't they supposed to be running faster than light too?
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