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A comment on How far could a spaceship go if we never ran out of thrust? (2020). Parent comment

Re:How far could a spaceship go if we never ran out of thrus... by simiones on Tuesday August 10, 2021 @05:28AM (#28126747)
No, the "speed of light", c, is actually the speed of energy and matter. Everything is always moving at this speed in 4-dimensional space-time. If you are not moving in space, you are moving through "time" at this speed. Since this is just the speed things move at, it makes no sense to discuss moving faster or slower than this speed.
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Re:How far could a spaceship go if we never ran out of thrus... by ccozan on Tuesday August 10, 2021 @06:40AM (#28127169)
Correct explanation!
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