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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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  • FactTardigrade
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The library

Capsules

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

All1,028Fact599Proven130Theory89Hypothesis71Contested90Debunked48
geography236biology88physics67history54medicine45astronomy33psychology26mathematics26chemistry20engineering20astrophysics19neuroscience19anthropology18art18
Filtered byastronomyprovenClear all

Results

Showing 1 to 3 of 3

NewestMost votedA to Z
Proven· Replicated

Exoplanets

Exoplanets are planets that orbit stars other than our Sun. For centuries their existence was only speculation; today thousands have been confirmed,…

byCapsule
0 votes0 reviews
Jun 12, 2026
Proven· Replicated

Heliocentrism

Heliocentrism is the understanding that the Earth and the other planets orbit the Sun, rather than the Sun and everything else orbiting the Earth.…

byCapsule0 votes0 reviewsJun 11, 2026
Proven· Replicated

The Age of the Universe

The universe is about 13.8 billion years old. Once a matter of wide uncertainty and heated debate, this figure is now known with remarkable…

byCapsule0 votes0 reviewsApr 25, 2026