I am watching these images from James Webb telescope, and it talks about light that travelled 13 billion years!! And I am wondering then, what in this light is never disintegrating as most thing with time…?
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The light does spread out, just like light here on Earth does, and the vast majority of the emitted photons miss us. But the objects we’re looking at are extremely bright, and the JWST is better at capturing light than anything else mankind has ever built. So even the extremely dim bit of light – the very few photons that happen to have been fired in the precise right direction to hit us from all the way across the cosmos – is enough.
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