How can you find planets and stars billions of light years away from earth without anything inbetween to cover the sight?
In: Engineering
I think you’re asking how we can see far-away celestial bodies without anything blocking our view:
Space is really empty. Even in our solar system we can see every planet without another getting in the way (the only reason we can’t sometimes is because of the sun). Even the moon is way farther away than it seems.
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