Space is everything in the universe that lies outside the Earth's atmosphere. Looking at the night sky, space seems filled with stars.
Yet, the distances between the stars are imaginably vast, and there is almost nothing between them but clouds of stardust.
Much of space is a vast, empty void, which is how it gets its name.
No one knows how large space is, and much of it is far away to see, but using modern technology astronomers are discovering more and more.
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