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wolframhydroxide@sh.itjust.works ⁨1⁩ ⁨day⁩ ago

So, what I’m taking away from this is that, if I ever see a blue rose, it’s already too late, and the object moving at relativistic speeds toward me has already probably ignited a thermonuclear reaction in the air around it, but the light from the fusion bomb before me has not yet reached me?

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Hadriscus@jlai.lu ⁨1⁩ ⁨day⁩ ago
It’s not necessarily too late ! it could be far, far from you. Far enough.

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- wolframhydroxide@sh.itjust.works ⁨1⁩ ⁨day⁩ ago
  In that case, that would have to be a VERY big rose, which doesn’t bode well for life on earth if it’s approaching at relativistic speeds. Or are you suggesting that it’s a galactic - scale rose, and we’ve got a few million years before it obliterates the Milky Way?
  
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  - FluorineBalloon@programming.dev ⁨1⁩ ⁨day⁩ ago
    “A galactic-scale relativistic rose by any other name would smell just as blue.”
    
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  - Hadriscus@jlai.lu ⁨1⁩ ⁨day⁩ ago
    I was thinking we were looking at it through the lens of some bigass telescope
    
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    tetris11@feddit.uk ⁨1⁩ ⁨day⁩ ago
    the only sane answer
    
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JohnAnthony@lemmy.dbzer0.com ⁨23⁩ ⁨hours⁩ ago
It’s fine! My math says the rose is actually moving away from you, at around a third of the speed of light.

At this speed, it orbits the earth (at sea level) 2.5 times in a second. Maybe it shoots for the moon, which it reaches in less than 4 seconds. Or it might be on its way to Neptune, which will take it 12 hours!

Also, if this red rose was actually moving towards you at the same speed, I guess it would look black, since you would receive a wavelength you can’t see? Ignoring the pesky thermonuclear reaction stuff…

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