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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 byFactspaceClear all

Results

Showing 1 to 12 of 12

NewestMost votedA to Z
astrobiology
Fact

Biosignatures

Measurable indicators that life is or was present. They are how the search for life beyond Earth is actually conducted, since organisms cannot be…

byCapsule
0 votes0 reviews
astronomy
Fact· Empirical

The Planets of the Solar System

The Solar System is the Sun together with everything held in orbit around it by gravity: eight planets and their moons, several dwarf planets, and…

byCapsule0 votes0 reviews
astronomy
Fact· Historical

Neil Armstrong

Neil Armstrong (1930 to 2012) was an American astronaut and the first human being to set foot on the Moon. His step onto the lunar surface in 1969…

byCapsule0 votes0 reviews
astronomy
Fact· Historical

The James Webb Space Telescope

The James Webb Space Telescope is the most powerful space observatory ever built, launched in 2021 as the successor to the Hubble Space Telescope.…

byCapsule0 votes0 reviews
astronomy
Fact· Empirical

International Space Station

The International Space Station, or ISS, is a large spacecraft in orbit around the Earth that serves as a home and laboratory for astronauts. The…

byCapsule0 votes0 reviews
history
Fact· Historical

Apollo 11

Apollo 11 was the spaceflight that first landed humans on the Moon. On July 20, 1969, the American astronauts Neil Armstrong and Buzz Aldrin walked…

byCapsule0 votes0 reviews
astronomy
Fact· Empirical

Saturn

Saturn is the sixth planet from the Sun and the second largest in the Solar System, famous above all for its magnificent rings. A giant ball of gas…

byCapsule0 votes0 reviews
astronomy
Fact· Empirical

The Sun

The Sun is the star at the centre of the Solar System, a vast sphere of hot plasma whose gravity holds the planets in their orbits and whose light…

byCapsule0 votes0 reviews
astronomy
Fact· Empirical

Mars

Mars is the fourth planet from the Sun and the most Earth-like of our neighbours, a cold, rusty-red desert world that has captivated humans for…

byCapsule0 votes0 reviews
astronomy
Fact· Empirical

Black Hole

A black hole is a region of space where gravity is so intense that nothing, not even light, can escape once it passes a certain boundary. They are…

byCapsule0 votes0 reviews
astronomy
Fact· Empirical

The Solar System

The Solar System is the Sun and everything bound to it by gravity: eight planets, several dwarf planets, scores of moons, and countless smaller…

byCapsule0 votes0 reviews
astronomy
Fact· Empirical

The Moon

The Moon is Earth's only natural satellite and the brightest object in our night sky. Large in proportion to its planet and close enough to study…

byCapsule0 votes0 reviews