Astronomy

Definition of Mars

Mars is the name in Spanish of a planet that is characterized by being desert, small in size, with a rocky structure and cold conditions. This territory, which is popularly called the red planet due to the particular color of its soil due to the oxidized iron found in it, generates a […]

Definition of dark matter

Dark matter is that which does not emit any kind of electromagnetic radiation nor can it interact with it. Therefore, it is inferred that it exists from its gravitational consequences on the matter that can be observed. It can be stated that dark matter occupies space and establishes an interaction with gravity, […]

Definition of law of universal gravitation

The law of universal gravitation is a legacy of Isaac Newton, an English scientist who included it in "Philosophiae Naturalis Principia Mathematica", a work of his authorship that came to light in mid-1687. This content of great significance throughout history marks the link of proportionality that is established between the […]

Definition of natural satellite

A natural satellite is an astronomical object that orbits a planet. It is a celestial body that is generally smaller than the planet it accompanies. The idea of ​​a natural satellite is usually contrasted with the concept of an artificial satellite: in the latter case, it refers to […]

Definition of celestial body

Celestial body is the name given to each natural object belonging to the universe that, thanks to the force of gravity, achieves an interaction with some other body. If the element, in the absence of a force that generates influence on it, does not orbit or is orbited, for astronomers it is a wandering body. It's worth the […]

Definition of Orion Nebula

The Orion Nebula is an astronomical object located south of Orion's belt. It is characterized by its great brightness and because it can be seen from planet Earth with the naked eye. To understand exactly what the concept refers to, it is important to examine several terms. Attention must be paid, so […]

Definition of asteroid belt

Asteroid belt is a concept specific to astronomy. It refers to a structure in the solar system called a circumstellar disk that is located in the middle of the orbits corresponding to Mars and Jupiter. Before delving into the particularities and scope of this notion, it is essential to remember that the theory defines asteroids […]

Definition of Halley's comet

The Greek word komḗtēs, which comes from kómē (translatable as "hair"), came to Latin as comet. The term arrived in our language as a comet, being used in the field of astronomy to refer to a star enveloped or accompanied by luminosity that traces an orbit of great eccentricity. Comets are celestial bodies formed by […]

Definition of artificial satellite

Originating from the Latin word satelles, satellite is a term with several meanings. The first meaning mentioned in the dictionary of the Royal Spanish Academy (RAE) refers to the celestial body that orbits a planet and whose brightness is produced by reflecting sunlight. The artificial, meanwhile, is that which […]

Definition of origin of the universe

The origin of the universe is one of the great mysteries of humanity. Throughout history, theories and assumptions have varied according to the acquisition of knowledge and the advancement of science. Before continuing, it is important to analyze the terms that make up the expression. The origin is called […]