Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

Kepler's First Law of Planetary Motion01:10

Kepler's First Law of Planetary Motion

In the early 17th century, German astronomer and mathematician Johannes Kepler postulated three laws for the motion of planets in the solar system. He formulated his first two laws based on the observations of his forebears, Nikolaus Copernicus and Tycho Brahe.
Polish astronomer Nikolaus Copernicus put forth a theory that stated a heliocentric model for the solar system. According to this heliocentric theory, all the planets, including Earth, orbit the Sun in circular orbits.
On the other hand,...
Kepler's Second Law of Planetary Motion01:29

Kepler's Second Law of Planetary Motion

In the early 17th century, German astronomer and mathematician Johannes Kepler postulated three laws for the motion of planets in the solar system. His first law states that all planets orbit the Sun in an elliptical orbit, with the Sun at one of the ellipse's foci. Therefore, the distance of a planet from the Sun varies throughout its revolution around the Sun.
While in an elliptical orbit, the total energy of the planet is conserved. Therefore, the planet slows down when it is at apogee and...
Kepler's Third Law of Planetary Motion01:18

Kepler's Third Law of Planetary Motion

In the early 17th century, German astronomer and mathematician Johannes Kepler postulated three laws for the motion of planets in the solar system. In 1909, he formulated his first two laws based on the observations of his forebears, Nikolaus Copernicus and Tycho Brahe. However, in 1918, he published his third law of planetary motion, which gives a precise mathematical relationship between a planet's average distance from the Sun and the amount of time it takes to revolve around the Sun. It...
Schwarzschild Radius and Event Horizon01:21

Schwarzschild Radius and Event Horizon

No object with a finite mass can travel faster than the speed of light in a vacuum. This fact has an interesting consequence in the domain of extremely high gravitational fields.
The minimum speed required to launch a projectile from the surface of an object to which it is gravitationally bound so that it eventually escapes the object’s gravitational field is called the escape velocity. The escape velocity is independent of the mass of the object. Merging the idea of escape velocity with the...
Detection of Black Holes01:10

Detection of Black Holes

Although black holes were theoretically postulated in the 1920s, they remained outside the domain of observational astronomy until the 1970s.
Their closest cousins are neutron stars, which are composed almost entirely of neutrons packed against each other, making them extremely dense. A neutron star has the same mass as the Sun but its diameter is only a few kilometers. Therefore, the escape velocity from their surface is close to the speed of light.
Not until the 1960s, when the first neutron...
Space-Time Curvature and the General Theory of Relativity01:17

Space-Time Curvature and the General Theory of Relativity

In 1905, Albert Einstein published his special theory of relativity. According to this theory, no matter in the universe can attain a speed greater than the speed of light in a vacuum, which thus serves as the speed limit of the universe.
This has been verified in many experiments. However, space and time are no longer absolute. Two observers moving relative to one another do not agree on the length of objects or the passage of time. The mechanics of objects based on Newton's laws of motion,...

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

Galactic archaeology with Gaia.

Science (New York, N.Y.)·2019
Same author

Interstellar medium. Pseudo-three-dimensional maps of the diffuse interstellar band at 862 nm.

Science (New York, N.Y.)·2014
Ver todos los artículos relacionados

Video Experimental Relacionado

Updated: Jul 24, 2026

Bringing the Visible Universe into Focus with Robo-AO
10:35

Bringing the Visible Universe into Focus with Robo-AO

Published on: February 12, 2013

Astronomía, también conocida como astronomía. Los encuentros galácticos.

Rosemary Wyse1

  • 1Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218, USA. wyse@skysrv.pha.jhu.edu

Science (New York, N.Y.)
|August 23, 2003
PubMed
Resumen

La galaxia de la Vía Láctea no ha experimentado grandes colisiones recientemente, a diferencia de Andrómeda. Este estudio de formación de galaxias revisa las interacciones de las galaxias satélite y la evolución galáctica dentro del Grupo Local.

Más Videos Relacionados

Scattering And Absorption of Light in Planetary Regoliths
11:34

Scattering And Absorption of Light in Planetary Regoliths

Published on: July 1, 2019

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface
06:14

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface

Published on: July 30, 2020

Videos de Experimentos Relacionados

Last Updated: Jul 24, 2026

Bringing the Visible Universe into Focus with Robo-AO
10:35

Bringing the Visible Universe into Focus with Robo-AO

Published on: February 12, 2013

Scattering And Absorption of Light in Planetary Regoliths
11:34

Scattering And Absorption of Light in Planetary Regoliths

Published on: July 1, 2019

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface
06:14

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface

Published on: July 30, 2020

Área de la Ciencia:

  • La astronomía y la astrofísica.
  • Evolución cósmica y formación de galaxias.

Sus antecedentes:

  • El Grupo Local, que incluye las galaxias de la Vía Láctea y Andrómeda, proporciona un laboratorio único para estudiar la formación y evolución de galaxias.
  • Comprender las interacciones galácticas, como las colisiones con galaxias satélites, es clave para descifrar la historia cósmica.

Objetivo del estudio:

  • Para revisar estudios recientes sobre colisiones entre la Vía Láctea y sus galaxias satélite.
  • Para comparar la historia de colisiones de la Vía Láctea con la de la galaxia de Andrómeda.

Principales métodos:

  • Revisión de los datos de observación y modelos teóricos relativos a las interacciones galácticas dentro del Grupo Local.
  • Análisis de evidencia de colisiones pasadas y eventos de acreción tanto en la Vía Láctea como en Andrómeda.

Principales resultados:

  • La Vía Láctea muestra evidencia de colisiones menores, como con la galaxia enana de Sagitario.
  • La Vía Láctea parece haber evitado grandes colisiones durante los últimos 10 mil millones de años, lo cual es inusual para los modelos de formación de galaxias.
  • Andrómeda exhibe signos de importantes eventos recientes de acreción y / o interrupción, alineándose mejor con las expectativas.

Conclusiones:

  • La reciente historia de colisiones de la Vía Láctea se desvía de los modelos típicos de formación de galaxias.
  • El camino evolutivo de Andrómeda, marcado por importantes eventos recientes, ofrece un estudio de caso contrastante dentro del Grupo Local.