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Capsule of the Day

DebunkedThe PolygraphThe instrument popularly called a lie detector, which records breathing, blood pressure, pulse and skin conductance dur…

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The library

Capsules

1,028 capsules, each one classified by the strength of its evidence.

All1,028Fact599Proven130Theory89Hypothesis71Contested90Debunked48
geography236biology88physics67history54medicine45astronomy33psychology26mathematics26chemistry20engineering20astrophysics19neuroscience19anthropology18art18
Filtered byastrophysicsphysicsClear all

Results

Showing 1 to 3 of 3

NewestMost votedA to Z
Hypothesis

Modified Newtonian Dynamics

Galaxies rotate faster at their edges than the visible matter can explain. The standard answer is that unseen dark matter supplies the extra gravity.…

byCapsule
0 votes0 reviews
Aug 3, 2026
Proven· Replicated

The Bending of Starlight

The bending of starlight is the deflection of light by gravity, predicted by Einstein's general theory of relativity and confirmed during a solar…

byCapsule0 votes0 reviewsJun 12, 2026
Proven· Replicated

Gravitational Waves

Gravitational waves are ripples in the fabric of space and time, set off by some of the most violent events in the universe. Predicted by Einstein a…

byCapsule0 votes0 reviewsJun 12, 2026