Definition

The mysterious and wondrous history of the number Pi

Death is not the end: New mathematical models show cells can be revived!

Researchers are redefining the criteria for determining whether a cell is alive or dead.

Energy 'made of what'?

To scientists, energy is not really

Where is the end of the Solar System?

Depending on the definition, the border of the solar system can be the Kuiper Belt, the corona, or the Oort Cloud.

The definition of death has been shaken: Scientists revive a pair of human eyes that died after 5 hours

This will shake the definition of death, especially the process of brain death in the absence of oxygen that is thought to be irreversible.

Ultra-precise atomic optical clock redefines the length of a second

The more detailed detection of small changes in the flow of time could help scientists uncover new physical evidence.

Earth has 'matter in another dimension', scientists have been confused for 90 years

Matter exists in 4 states solid, liquid, gas and plasma can be a definition that needs rethinking. There is a substance that belongs to the state of suspension between s…

NASA spacecraft finds new 'life world' with warm ocean

The new understanding has greatly expanded the definition of a habitable world - scientists conclude about Mimas, Saturn's seemingly deadly moon.

Why can the Moon be considered a planet?

Many celestial bodies in the Solar System can fall into the 'planet' category, including Earth's Moon and many others, and even some 'dwarf planets', or 'asteroids'.

The longest and worst traffic jams in history

According to the Wikipedia definition, traffic congestion occurs when the volume of vehicles in traffic or in lanes requires a wider distance from the road.

Little-known facts about the virus: Where do they come from, how do they spread and cause illness?

The over-reliance on host cells pushes the virus to the limits of the definition of life. Some scientists say viruses live, but others say they're just inanimate entitie…

Is 1 horsepower equal to the power of a horse?

There are many ways to measure the power of a motor block of cars, motorcycles and air-conditioners ... So is a 100 horsepower car with the power of 100 horses? The answ…

The speed of light is 299,792,458 m / s, what is the speed of darkness?

To understand

What is chaos theory?

Chaos theory can be described as 'the science of surprises'.

Today, the definition of 1kg will be calculated by light

Since ancient times, the concept of kg has been defined by a cylindrical platinum-iridium alloy block, called Le Grand K and protected in a basement in the suburbs of Pa…