To protect their kings, ancient Mesopotamians discovered how to predict eclipses, which were associated with the deaths of rulers. This eventually led to the birth of astronomy.
Articles on Arthur Eddington
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Einstein’s theory of general relativity suggests that our universe originated in a Big Bang. But black holes, and their gravitational forces, challenge the limits of Einstein’s work.
Theories exploring the possibility of time travel rely on the existence of types of matter and energy that we do not understand yet.
