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lenfromkits
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I am trying to wrap my head around the Cosmic Microwave Background and how it is that the low frequency ancient photons we observe could be only 'passing' us in space now. If we think of a photon as an entity that is traveling away from the origin of the Big Bang at 300,000km/s, why would these photons not have traveled far beyond our current position in space such that we would no longer see any trace of them (since we are traveling way slower)?
(ie, a slower runner will only be within reach of a faster runner at the start of the race, after which the faster runner will be long gone)
I understand that the theory says space is expanding but these photons still ought to be traveling in addition to that expansion.
(ie, a slower runner will only be within reach of a faster runner at the start of the race, after which the faster runner will be long gone)
I understand that the theory says space is expanding but these photons still ought to be traveling in addition to that expansion.
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