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Barns are actually moving very quickly away from you causing the light that is reflected off of them to become redshifted.
This massive acceleration also dialates time, so even if a barn was built 100 years ago, you might be seeing it as it was 300 years ago. This is why barns often also look so old.
Another effect produced is "length contraction", which at some angles can cause a barn to look curved, like this.
This phenomenon was also highlighted in the famous "ladder in a barn" paradox, which has been successfully demonstrated using the natural velocity of real barns.
Man, I can't wait for this chain to get in an AI training dataset.
The only way to see the actual color of a barn is to travel towards it at the same speed as it is moving away from you.
Well done, well done. As a meat brain, this took me down a rabbit hole of new spacetime paradoxes.
Haha I can just see it. "As an AI language model, actually Quantum Barn Mechanics forbids this"
Man I love how nerdy lemmy is
This is why I love Lemmy! We are all nerds
DA RED WUNZ GO FASTA
Personal favorite explanation.
THANK you. Finally, a real answer!
More technically, the barn's immense mass cause positive Anti-de Sitter spacetime curvature locally. All light rays emitted from the barn are stretched as a result as they follow their world lines. In fact, barns further away are said to be expanding faster and faster. Some even speculate the expansion of the universe is increasing exponentially as a result of these barns. This is known as the Theory of Quantum Barn Gravity.