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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 byFactastronomyastronomyClear all

Results

Showing 1 to 11 of 11

NewestMost votedA to Z
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…

byCapsule
0 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· Historical

Carl Sagan

Carl Sagan (1934 to 1996) was an American astronomer and science communicator who did more than almost anyone to bring the wonder of the cosmos to…

byCapsule0 votes0 reviews
astronomy
Fact· Historical

Galileo Galilei

Galileo Galilei (1564 to 1642) was an Italian astronomer, physicist, and engineer, often called the father of modern science. By insisting on…

byCapsule0 votes0 reviews
astronomy
Fact· Historical

The Telescope

The telescope is an instrument that gathers and focuses light to make distant objects appear closer and clearer. Its invention transformed astronomy,…

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