Tides

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Physics

Tides can actually affect the Earth's rotation, slowing it down very, very slightly over incredibly long periods. elaborate share

Matter

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Physics

Most of the matter in the universe is dark matter, which we can't see or directly interact with. elaborate share

Cosmology

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Physics

The observable universe is only a tiny fraction of the entire universe, which may be infinitely large. elaborate share

Thermodynamics

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Physics

The efficiency of a heat engine is fundamentally limited by the temperatures at which it operates; you can never completely convert heat into work. elaborate share

Retrocausality

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Physics

Retrocausality, if true, could mean that future events could influence the past, potentially explaining some quantum entanglement phenomena. elaborate share

String Theory

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Physics

String theory requires more than the usual three spatial dimensions and one time dimension; it proposes the existence of extra, curled-up spatial dimensions that are too small to observe directly. elaborate share