ELI5: Explain Like I'm 5

Big sky theory

Big sky theory is a way of thinking about how large the sky is and how it relates to our planet Earth. So imagine you're outside on a nice day and you look up at the sky. What you see is a big, bright blue space that seems to go on and on forever. The big sky theory is a way of understanding just how big and vast that space really is!

Think of it like this: if you're standing on the ground looking up at the sky, the sky seems like a big dome that covers everything. But if you were to zoom out and look at the Earth from outer space, you'd see that the sky is actually just a thin layer of air surrounding the planet. It's sort of like a big bubble that surrounds us.

Now, here's where the big sky theory comes in: some people believe that when you're looking at the sky, it helps to imagine that the bubble is infinitely large. This means that there's no end to the sky - it just goes on and on forever. It's like the ultimate empty space, stretching out infinitely in all directions.

But the big sky theory doesn't just relate to the size of the sky - it's also a way of thinking about how small we are in comparison. The sky is so big and we are so tiny in comparison that it can make us feel humble and insignificant. But at the same time, it's a comforting thought that we are a part of something so vast and beautiful.

So, to sum it up in simpler terms: the big sky theory is a way of seeing the sky as a super huge, infinite, empty space that stretches out forever, and it helps us feel small and humble in comparison.
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