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Resident 4chan Astronomy Expert
!PaaSYgVvtw
>>364484 The night sky ("space") isn't black because we're looking at dark matter,
This is a simple question, but the answer is actually pretty complicated when you think about it. There are stars in every tiny arcsecond of space when we look up at the night sky, and because of the cosmic microwave background, we should even see a faint red glow from the first time light broke through a dense sea of quarks n' shit. The answer to the cosmic microwave background being invisible is that as time goes on, the fabric of space-time stretches, making things get father apart, so as everything moves away from everything else, the light gets stretched (because of the doppler effect), and redshifted, so the light, that about 14 billion years ago was in the visible and infrared part the spectrum, is now in the microwave part, therefore invisible to our eyes.
Now the same concept applies to all the other stars and galaxies. The light from those stars haven't reached earth, and the light that has has been shifted away from the visible part of the spectrum that our eyes can see. Also, the interstellar medium blocks, absorbs and scatters lots of light. Bigass masses of dust and stuff make the center of our own milky way look black, even though it's the densest concentration of stars in our galaxy.
Dark matter... we can't see it, and it's only prevalent on galactic scales, so we can't really study it yet.
And as for the athiest vs christian bullshit, you're both fucking retarded. There could be a god that created this universe (or multiverse), it doesn't mean it's the christian god, and there might not be.
Agnostic = win Athiest = Faggots and assholes Christians = Misguided but at least nice
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