If the CMB is in all of space, how does the Earth not get cooked in it?
In: 255
The sun hits us with an incredible 1700 Watts per square meter of power. The CMB hits us with a paltry 0.000002 W/m². ~~That’s probably not even measurable after the Earth’s magnetic field blocks it.~~ In fact, the reason that it’s everywhere is part of what makes us safe. It started a lot more powerful, but as the universe grew, the energy was spread thinner and thinner. Now there’s just not enough in one place to do anything significant. It took us until 1964 to even have equipment sensitive enough to pick it up.
Edit, I wasn’t even thinking about it, but they didn’t have Hubble on 1964, so it has to get through.
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