Top Unsolved Scientific Mysteries

Given the high probability of extraterrestrial life, the lack of evidence or contact is puzzling.

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The integration of quantum mechanics and general relativity into a single theory remains an open problem.

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Responsible for the accelerating expansion of the universe, its nature and properties are still unknown.

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The hard problem of consciousness—how subjective experience arises from brain activity—remains unsolved.

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This medieval manuscript contains an undeciphered script and illustrations, making its meaning and purpose unknown.

This invisible form of matter is known to exist due to its gravitational effects, but its composition remains a mystery.

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A fundamental question in computer science about the relationship between computational complexity classes.

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The universe contains much more matter than antimatter, but the reason for this imbalance is not fully understood.

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Despite numerous theories, the exact mechanism by which life first emerged on Earth remains unknown.

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While gravity's effects are well understood, its underlying mechanism and why it exists are still not fully explained.

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