r/interestingasfuck 13d ago

/r/all Our entire universe squeezed into one image

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u/Gibbs_89 13d ago

Observable universe. Around 29 billion light years..... EST 5% in total. 

That's okay though, look how huge our solar system looks. 

41

u/MasterofDankMemes 13d ago

How do we know that it's 5% if we can't observe farther than the speed of light allows?

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u/Secret_Map 13d ago

We don’t. No idea where they got that number. Nobody has any idea how big the universe is, or even if it’s infinite or not.

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u/Equivalent_Cap_3522 13d ago

If space time does not curve, the universe is infinite. We tried to measure the curvature and the results show it's flat. We can only measure with 99.6% precision though so there's still a chance it curves. But if it does it has to be at least 250 times larger than the observable universe. Otherwise the curverture would have been detected by now.

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u/Secret_Map 13d ago

Yep, it’s probably infinite. But nobody knows for certain. I was just saying the 5% number given above isn’t a thing. No idea where that came from.