Video Experimental Relacionado
Updated: Jul 12, 2026
11:34
Scattering And Absorption of Light in Planetary Regoliths
Published on: July 1, 2019
El lado oscuro de los anillos de Urano
Imke de Pater1, H B Hammel, Mark R Showalter
1Astronomy Department, 601 Campbell Hall, University of California, Berkeley, CA 94720, USA. imke@astron.berkeley.edu
Science (New York, N.Y.)
|August 25, 2007
Resumen
Urano es el planeta Urano.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- La astronomía es la astronomía.
- Sistemas de anillos Sistemas de anillos.
Sus antecedentes:
- Los anillos de Urano fueron descubiertos en 1977.
- Los anillos de Urano se ven típicamente desde un ángulo que oscurece su lado oscuro.
- La orientación edge-on de 2007 ofreció una oportunidad de visualización única.
Objetivo del estudio:
- Para obtener imágenes y analizar el lado oscuro de los anillos de Urano.
- Para evaluar los cambios en la estructura y composición del sistema de anillos.
- Para comparar las observaciones actuales con los datos de la nave espacial Voyager.
Principales métodos:
- Adquisición de imágenes infrarrojas terrestres de los anillos de Urano.
- Análisis de la débil distribución de material del sistema de anillos.
- Comparación de nuevos datos con observaciones históricas.
Principales resultados:
- El lado oscuro de los anillos de Urano reveló un sistema dramáticamente cambiado.
- Se observó una nube extendida de material débil, no asociada con estructuras de anillos conocidas o cinturones de polvo.
- Se observaron diferencias significativas en comparación con las imágenes de la nave espacial Voyager de 1986.
Conclusiones:
- La distribución del polvo en el sistema de anillos de Urano ha sufrido cambios sustanciales desde 1986.
- Estos cambios ocurren en escalas más grandes que las previamente observadas en los sistemas de anillos planetarios.
- El único ángulo de visión de 2007 destacó la evolución dinámica dentro de los anillos de Urano.
Videos de Conceptos Relacionados
01:29Dark Triad and Person Perception
Person perception is influenced by both external behaviors and the observer’s internal characteristics, including personality traits. Individuals with dark personality traits, comprising psychopathy, Machiavellianism, and narcissism — collectively known as the dark triad – exhibit manipulative and exploitative tendencies in social contexts. These traits affect how they perceive others and how they are perceived.The Role of Dark Personality Traits in Person PerceptionBlack et al. (2014) explored...
02:15The Contractile Ring
Contractile rings are composed of microfilaments and are responsible for separating the daughter cells during cytokinesis. Contractile ring assembly proceeds along with other cell cycle events; however, very few mechanistic details are known about the timing and coordination of the contractile rings with the cell cycle.
A small GTPase, RhoA, controls the function and assembly of the contractile ring. RhoA belongs to the Ras superfamily of proteins. The activation of formins by RhoA promotes...
A small GTPase, RhoA, controls the function and assembly of the contractile ring. RhoA belongs to the Ras superfamily of proteins. The activation of formins by RhoA promotes...
02:15The Contractile Ring
Contractile rings are composed of microfilaments and are responsible for separating the daughter cells during cytokinesis. Contractile ring assembly proceeds along with other cell cycle events; however, very few mechanistic details are known about the timing and coordination of the contractile rings with the cell cycle.
A small GTPase, RhoA, controls the function and assembly of the contractile ring. RhoA belongs to the Ras superfamily of proteins. The activation of formins by RhoA promotes...
A small GTPase, RhoA, controls the function and assembly of the contractile ring. RhoA belongs to the Ras superfamily of proteins. The activation of formins by RhoA promotes...
01:21Schwarzschild 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...
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...
01:18Kepler'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...
01:10Kepler'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,...
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,...