Astronomy

Definition of space-time

Space-time is a concept that is used in the theories of general and special relativity postulated by Albert Einstein (1879-1955). The notion refers to the integration of space and time into a continuous entity. Space-time can be considered to be a model that establishes an indissoluble link between space and time, […]

Definition of pulsar

Pulsar is a concept specific to the field of astronomy. In the dictionary of the Royal Spanish Academy (RAE) it is indicated that this word refers to a high-density star that only has neutrons, rotates quickly and is capable of emitting intense electromagnetic radiation at short and regular intervals. Before delving into the knowledge […]

Definition of strong nuclear force

The strong nuclear force is part of the list that accounts for the fundamental interactions that particle physics recognizes within the standard model established to explain what types of forces can occur between subatomic particles. With the weak nuclear force, the electromagnetic force and the force of gravity, the […]

Definition of observatory

Observatory is the place or facility that is adequately equipped to investigate, examine and record elements, objects, situations and events of a social, natural or astronomical nature. This type of center was born a long time ago with the purpose of observing and studying atmospheric or astronomical phenomena. Experts in climatology, volcanology, […]

Definition of black hole

A black hole is an area of ​​space with highly dense matter. Due to this enormous condensation of matter, it has a great force of gravity and produces a distortion in space-time. It should be considered that black holes are not holes nor are they empty: on the contrary, they contain more matter in less […]

Definition of brown dwarf

A brown dwarf is a fascinating substellar object that, due to its characteristics, does not fit within the group of gas giant planets nor does it fit the profile of stars. This type of star incapable of nuclear fusion is constantly being investigated in order to obtain greater precision […]

Definition of chaos theory

Chaos theory is a concept that is used in various sciences to refer to the changes that occur in a system when a variation in its initial conditions is recorded. These modifications can be very important even when the first alteration is minimal. In deterministic systems, it is understood that the behavior […]

Definition of Öpik-Oort cloud

The Öpik-Oort cloud is a formation with a spherical external appearance (and a toroidal internal appearance and popularly known as the Hills cloud) that is located at the edge of the solar system. It is made up of a huge number of trans-Neptunian objects and has been named after two prominent astronomers: Ernst Öpik (a […]

Definition of red giant

Red giant is the name given to those stars with an intermediate or low mass that, within the framework of the stellar evolution process, have already crossed the main sequence and exhausted the hydrogen they possessed. When analyzing the stellar life cycle, it is noted that this stage is reached with nuclear fusion […]

Definition of fundamental forces

Fundamental forces are, according to particle physics experts, interactions produced in the universe that cannot be broken down into more basic processes or phenomena. This set encompasses a standard model made up, in principle, of four elements: the weak nuclear force, the strong nuclear force, the force of gravity and […]