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[–] The_Cat 0 points 6 points (+6|-0) ago 

"We don't know the exact number" does not mean "you can make up whatever you want". Just accept that you were wrong and move on.

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[–] Kleyno 1 point -1 points (+0|-1) ago 

Except, in this case, you could never prove someone was wrong, one way or the other.

Unless we somehow managed to devise a way to teleport an observer to Antares, you'd never know for sure, if it were still there. That is the beauty of light having a finite speed.

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[–] The_Cat 0 points 5 points (+5|-0) ago 

Is it so hard for you to accept you were wrong that you have to reach for these silly absolutes? The only way that star is disappearing in the next 550 years is if something truly outrageously far-fetched would happen. So we can simply assume it won't and move on.