Universe Puzzles: Space. Do you know what space is made of?

The universe, and how it works, is like putting together a puzzle. Space is one of these mysteries. For many years, space was considered to be made of a substance, referred to be some as the #aether or ether. Now, it has different names like spacetime, or fields or foam. But what is it? How do particles or planets interact with each other throughout empty space? Five clues are presented to help solve this puzzle.

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