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Re:Why can’t I go faster than the speed of light? by mjburgess on Sunday September 12, 2021 @02:13PM (#28503423)
If distances are dilating, why isn't that /less/ ground?
Re:Why can’t I go faster than the speed of light? by shrimp_emoji on Sunday September 12, 2021 @02:31PM (#28503568)
The distance doesn't dilate; time does. The distance contracts.

E.g., to a photon moving at 1c, the whole universe has a contracted length of 0 meters, and it crosses the whole universe instantly. To us, observers at <1c, the whole universe has a non-contracted length of <a lot> and the photon takes <a long time> to cross the whole universe. By the time the photon's 0-second journey across the entire universe has finished (whatever that means), we're all extremely old. :D This is the time dilation meme of slowly-aging space travelers but taken to the extreme.

Re:Why can’t I go faster than the speed of light? by tobtoh on Monday September 13, 2021 @12:29AM (#28507860)
So if I was in a space battle and the enemy 'jumps to light speed'(1) to make a quick escape ... they would actually be easier to target with a laser because they 'slow down' from my perspective?

(1) 'light speed' as in the speed of light, not as in a sci-fi context of hyperspace jump/FTL jump.

Re:Why can’t I go faster than the speed of light? by micw on Monday September 13, 2021 @01:42AM (#28508168)
> E.g., to a photon moving at 1c, the whole universe has a contracted length of 0 meters, and it crosses the whole universe instantly.

Since the universe expands with >1c, I wonder if the photon actually crosses the whole universe. And if not, how it would look like from the prespective of the photon?

Re:Why can’t I go faster than the speed of light? by redwood on Sunday September 12, 2021 @02:56PM (#28503760)
Thanks for the clarification
Re:Why can’t I go faster than the speed of light? by 3pt14159 on Sunday September 12, 2021 @02:25PM (#28503525)
It basically depends on your perspective. To someone on earth watching the spaceship speed up to the speed of light, the spaceship looks like its contracting. To the person on the spaceship, the rest of the universe looks like it is approaching the speed of light, and hence, contracting.