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In the classical theory of gravity, which is based on real space-time, there are only two possible ways the universe can behave: either it has existed for an infinite time, or else it had a beginning at a singularity at some finite time in
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Manav’s 2025 Year in Books
Take a look at Manav’s Year in Books, including some fun facts about their reading.
513 books
|
227 friends
293 books
|
40 friends
2,259 books
|
56 friends
603 books
|
93 friends
192 books
|
77 friends
766 books
|
107 friends
82 books
|
218 friends
26 books
|
25 friends
More friends…
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