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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 byFactastrophysicsastrophysicsClear all

Results

Showing 1 to 4 of 4

NewestMost votedA to Z
astrophysics
Fact

Galaxies

Gravitationally bound systems of stars, gas, dust and dark matter. They are the units in which the visible matter of the universe is organised, and…

byCapsule
0 votes0 reviews
astrophysics
Fact

Neutron Stars

The collapsed cores left by massive stars, containing more than the Sun's mass within a sphere about twenty kilometres across. They are the densest…

byCapsule0 votes0 reviews
astrophysics
Fact

Supernovae

The explosive destruction of a star, briefly outshining an entire galaxy. Supernovae produce and disperse most of the heavy elements, they trigger…

byCapsule0 votes0 reviews
astrophysics
Fact· Historical

Stephen Hawking

Stephen Hawking (1942 to 2018) was a British theoretical physicist who became one of the most famous scientists of his time, renowned for his work on…

byCapsule0 votes0 reviews