Astronomy

Definition of Pauli exclusion principle

Pauli exclusion principle is the name given to content linked to the field of quantum mechanics. The name of this expression refers to the surname of a theoretical physicist of Austrian origin since it was he, a man named Wolfgang Pauli who obtained Swiss and American citizenship, who in 1925 […]

Definition of cosmic rays

Cosmic rays are subparticles (or subatomic particles) that come from space and have the peculiarity of being as fast as they are full of energy. Trying to establish the origin of cosmic radiation and reveal various mysteries around this topic has led scientists to investigate for many decades how they are born, […]

Definition of particle accelerator

Particle accelerator is the name given to a highly complex device that, by using electromagnetic fields, accelerates charged particles to high speed with the intention of causing a collision of particles. In this context, an enormous number of new particles emerge, characterized by their brevity and instability. In a way, these teams […]

Definition of Pluto

Pluto, the most famous dwarf planet in the solar system, has fascinated scientists and space enthusiasts since its mention in 1930 by Clyde Tombaugh (discoverer). Pluto's atmosphere is tenuous. Located in the distant Kuiper Belt, this planet is one of the so-called icy bodies (objects composed mainly of ice). It has a […]

Definition of Zeeman effect

The Zeeman effect is a physical phenomenon that consists of the splitting of spectral lines into several components in the presence of a magnetic field. It was discovered by the Dutch physicist Pieter Zeeman in 1896 and can be explained by the interaction of the magnetic field with the magnetic moment associated with the electrons of atoms. […]

Definition of red dwarf

Red dwarf is the name given to a tiny star of low (or weak) luminosity and relatively low temperature (either of spectral type M or late K) that is part of the main sequence. They are not easy to observe with the naked eye, but they are the type of star that is most abundant in the […]

Definition of Hubble constant

The Hubble constant is a piece of information that originally appeared in the mathematical expression of the so-called Hubble law with a fixed value assigned. Over time, several scientists have replaced the idea of ​​constant with the concept of Hubble parameter since, according to relativistic cosmological models, […]

Definition of holographic principle

Holographic principle is the name given to an idea, theory or interpretation that was promoted in the '90s by two specialists in theoretical physics: the American Leonard Susskind and the Dutch Gerardus 't Hooft. Stephen Hawking, accompanied by Thomas Hertog, also worked for two decades on a cosmological theory that […]

Definition of space probe

Space probe is the name given to artificial devices that are sent into space in order to obtain information linked to comets, asteroids, satellites and planets, among other celestial bodies or astronomical objects. To support these essential structures for scientific research, instruments are used (among […]

Definition of binary star

Binary star is an expression used in the field of astronomy to identify a type of star system that is made up of a pair of stars that are characterized by orbiting around a shared center of mass. When the distance between this type of star is very short, the […]