How can you find planets and stars billions of light years away from earth without anything inbetween to cover the sight?
In: Engineering
Space is very, very large and very, very, very empty. There is literally nothing out there at all, to several significant digits. Stars and planets occupy a terribly small fraction of the space in the visible universe. If there is something in the way, like a dust cloud, we can’t see the planet/star. But space is so empty that this seldom happens.
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