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[-] GiveOver@feddit.uk 2 points 16 hours ago

There actually are things keeping that from happening but I don't want to get into it

[-] EvilHankVenture@lemmy.world 3 points 15 hours ago

I may be wrong, it's been a while since I looked into relativity. But I think it's possible from an outside perspective to see 2 objects that have a velocity relative to each other that is faster than the speed of light.

If 2 spacecraft travel in opposite directions at 60% of the speed of light from the earth it would appear that they are traveling away from each other faster than the speed of light. From either ship it would not appear that the other ship was traveling faster than the speed of light however.

[-] Robust_Mirror@aussie.zone 1 points 39 minutes ago

Yeah that's correct. If things couldn't move apart from each other faster than the speed of light from a 3rd party observers perspective, light itself would make no sense. Either all light would actually be travelling at half the speed of light, or half the light would be frozen.

this post was submitted on 25 May 2026
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