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What is the general theory of relativity and how does it differ from the special theory of relativity, and how do they both relate to the concept of spacetime?
What is the general theory of relativity and how does it differ from the special theory of relativity, and how do they both relate to the concept of spacetime?
Read lessWhat is the most distant known object in the universe? How far is it?
What is the most distant known object in the universe? How far is it?
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