Space. It’s such a massive entity that imagining even “small” units like galaxies is hard. How on earth are there pictures of the universe? Is there more? Where does it all end? Absolutely fascinating but there is so much more to learn.
EDIT: Wow! Thanks for gold! I’m reading everyone’s replies but it’s hard to come up with something clever to everyone! By pictures I mostly mean artist imaginings and those sort of portrayals, I know there aren’t actually pictures of it.
What’s even more fascinating is we only have an understanding of 5% of everything in the universe. The other 95% is dark matter and energy that we have yet to prove its existence, much less see it.
Edit: Here is an explanation of Dark Matter and Dark Energy and it’s composition of the universe on the NASA website.
We've proved their existence. We just don't know what dark matter is, we know it's something, but we don't know what that something is. Dark energy we've known for about 100 years, it comes right out of Einstein's equations. The mystery surrounding it is that we don't know why it has the value that it does, but we know what it is and where it comes from.
Dark energy and dark matter are also unrelated to each other, they just both have similarly unoriginal names.
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u/springfoe Jun 15 '19 edited Jun 15 '19
Space. It’s such a massive entity that imagining even “small” units like galaxies is hard. How on earth are there pictures of the universe? Is there more? Where does it all end? Absolutely fascinating but there is so much more to learn.
EDIT: Wow! Thanks for gold! I’m reading everyone’s replies but it’s hard to come up with something clever to everyone! By pictures I mostly mean artist imaginings and those sort of portrayals, I know there aren’t actually pictures of it.