So I’ve been watching a lot of video’s about how small we are compared to the universe. ( like [this](https://www.youtube.com/watch?v=9rrG5Nppaew&ab_channel=DANIELKAMARUZAMAN) ). And I don’t understand one thing. How do we know what our milky way looks like? And how do we know what the other millky ways look like?
In: Earth Science
I assume by milky way you mean our galaxy.
The answer is really really good (and expensive) telescopes in observatories plus space telescopes.
There are 4 types of galaxies based on shape: spiral, elliptical, lenticular, and irregular. The Milky Way galaxy (ours) is spiral. Andromeda is also spiral. Cygnus A is elliptical, if I remember right.
That help?
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