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4/4/2016 9:02:34 PM
18
faster than light travel will be achievable within a few decades
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It depends if you mean an object actually faster than the speed of light (which will never happen ), or if you mean an object jumping points in spacetime. The latter, in fact, is happening right now, as some galaxies are moving apart faster than the speed of light, but because new spacetime is being created between the objects.
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Not possible, an object with mass cannot travel at the speed of light and it is impossible to travel faster than the speed of light even without any mass (a photon), you'd be violating relativity. Fortunately there's some hypothetical loopholes like the alcubierre "warp drive" but that's pretty much it for now.
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Light has mass, so how can it travel at the speed of light?
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Light doesn't have mass
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Yes it does, hence why black holes are able to absorb light. If light had no mass, it would remain unaffected by gravity. Light is a particle as well as a wave.
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[quote]Yes it does, hence why black holes are able to absorb light. If light had no mass, it would remain unaffected by gravity. Light is a particle as well as a wave.[/quote] Light doesn't have mass. It's affected by Gravity because Gravity warps space-time around it. So when light travel to blackhole, they are going straight but space-time around it is warped to abnormal degree, light get 'sucked' in.
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light has mass, what are you dumb?
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No it doesn't. Seriously. It has 0 mass or it would end up with nothing but light and intense hit. Please, learn basic astronomy.
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Light has the least amount of mass that we know as there is nothing to compare it to, light still carries force which requires mass. Besides it is possible if to go faster then the speed of light if light itself could go faster
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are you literally dumb?
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It seems like you are incapable of understanding facts. http://www.desy.de/user/projects/Physics/Relativity/SR/light_mass.html
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need i repeat myself?
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Just go and learn special relativity. I have no words for you.
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Light is effected my gravity because it has momentum, not mass.
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Light doesn't have momentum, as you require mass for momentum i believe. Could be wrong tho, been ages since physics lessons.
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It has momentum because it has speed. c is the way it is for a reason.
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Light travel is more impossible than impossible.
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It might be possible if you're willing to cheat and distort perception: Light travels through different mediums at different speed. It travels slower through water and glass than it does through space. So what if we measure its speed through water and glass (or a glass full of water) and then try to surpass that speed in space. Then technically we could travel at a speed of light :) Since light is traveling at light speed from our perspective, then from the light's perspective, we are actually traveling at the speed of light as well. Or...since the edge of the universe is traveling faster than the speed of light, then from the universe's perspective, we would be also be traveling faster than the speed of light....but then light would also be traveling faster than the speed of light from the universe's perspective...so technically we would still be traveling at the speed of light? I think...
