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All facts — Page 20

The complete ONAURE library, newest first. Every fact has an explanation and a source you can check.

2056 facts

Science

A teaspoon of matter from a neutron star would weigh millions of tons.

The density of these stars is so extreme that protons and electrons collapse into neutrons, compressing huge masses…

Science

Sound travels over four times faster in water than in air.

Water molecules are closer together, which facilitates the rapid transmission of sound waves between them.

Space

A day on Venus is longer than a year on the same planet.

The planet takes longer to complete one rotation on itself than to complete an entire orbit around the Sun.

Space

There is a giant cloud of alcohol at the centre of our galaxy.

The Sagittarius B2 cloud contains vinyl alcohol in quantities sufficient to fill billions of litres of beer.

Technology

The first recorded computer bug was caused by an actual bug.

In nineteen forty-seven, a moth got stuck in a relay of the Harvard Mark II computer, causing a malfunction.

Technology

The first domain name registered on the internet was symbolics.com.

It was registered in nineteen eighty-five by a computer company in Massachusetts, marking the beginning of the domain…

Technology

About ninety percent of the world's currency exists only in digital format.

The vast majority of bank transactions and reserves are made electronically, with physical cash being a tiny fraction…

Animals

Caterpillars have about four thousand muscles in their bodies.

While humans have only about six hundred and fifty muscles, caterpillars possess thousands of micro-muscles that…

Animals

The Greenland shark can live for more than four hundred years.

This cold-water shark grows very slowly, about one centimetre per year, and only reaches sexual maturity at around…

Animals

Crows can remember human faces for years.

Studies have shown that crows not only recognise people who threatened them in the past, but they also communicate…

Animals

Dolphins give each other names using unique whistles.

Each dolphin develops a signature whistle in childhood, which functions as a proper name and is used by other group…

Animals

Leafcutter ants cultivate fungi for food.

They cut leaves not to eat them, but to use them as fertiliser in underground gardens where they grow a specific…

Human Body

The human liver can regenerate even after losing a large portion of its tissue.

It is the only internal organ capable of natural regeneration, able to return to its original size as long as at…

Human Body

The human body glows in the dark, but the light is invisible to the naked eye.

Chemical reactions in cells produce a small amount of light, with the face being the brightest area, but the…

Human Body

The strongest muscle in the human body relative to its size is the masseter.

Located in the jaw, this muscle is responsible for chewing and can exert incredible force on the molar teeth…

Human Body

The human brain consumes about twenty percent of all the body's energy.

Despite making up only two percent of body weight, the brain requires a constant supply of glucose and oxygen to keep…

Human Body

The lining of the human stomach renews itself every three or four days.

Gastric acid is so corrosive that without this rapid cell renewal, the stomach would digest itself, causing severe…

Food

Raspberries belong to the rose family.

Like apples, pears, and strawberries, raspberries are part of the Rosaceae family, sharing botanical and structural…

Food

The wasabi served in most restaurants is actually horseradish dyed green.

Real wasabi is a rare and expensive plant that loses its flavour quickly after being grated, so the industry uses…

Geography

Antarctica is technically the largest desert in the world.

A desert is defined by its very low annual precipitation. The interior of Antarctica receives less than fifty…

Geography

There are no mosquitoes in Iceland.

The rapid and drastic temperature changes in winter and the chemical composition of Icelandic water and soil make the…

Geography

The water level of the Dead Sea drops by more than one metre per year.

Extreme evaporation and the diversion of water from the Jordan River for agriculture and human consumption have…

History

Mammoths still roamed the Earth when the pyramids of Egypt were built.

While the Great Pyramid of Giza was being erected about four thousand five hundred years ago, a small isolated…

History

Harvard University was founded before calculus was invented.

Harvard opened its doors in sixteen thirty-six, while the principles of mathematical calculus were only formalised by…