If we are part of the Milky Way, how do we “see” the Milky Way?
Same way we can see much of the Solar System that Earth is a part of.
You just can't see 100% of it at any one moment or direction.
For a smaller scale analogy, let's say you are part of a big crowd on the street.
You can see some of it in front of you, but a lot of it is behind you....and much of the crowd is hidden by people who block your view.
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