Video Experimental Relacionado
Updated: Mar 24, 2026

11:34
Scattering And Absorption of Light in Planetary Regoliths
Published on: July 1, 2019
11.1K
La atmósfera de Plutón como fue observada por New Horizons
G Randall Gladstone1, S Alan Stern2, Kimberly Ennico3
1Southwest Research Institute, San Antonio, TX 78238, USA. University of Texas at San Antonio, San Antonio, TX 78249, USA. rgladstone@swri.edu.
Resumen
Los datos de Nuevos Horizontes revelan a Plutón
Área de la Ciencia:
- Ciencias planetarias
- Ciencias atmosféricas
- Astrobiología
Sus antecedentes:
- La composición y el estado de la atmósfera de Plutón eran en gran medida desconocidos antes de la misión New Horizons.
- Los modelos previos predijeron una estructura atmosférica diferente y una tasa de escape.
Objetivo del estudio:
- Para analizar e informar sobre el estado de la atmósfera de Plutón basado en los datos del sobrevuelo de New Horizons.
- Para comparar las condiciones atmosféricas observadas con los modelos previos al encuentro.
Principales métodos:
- Análisis de datos de la nave espacial New Horizons durante su sobrevuelo de Plutón.
- Comparación de las mediciones atmosféricas in situ con los datos de ocultación estelar basados en tierra.
Principales resultados:
- La atmósfera baja de Plutón se alinea con las observaciones terrestres.
- La atmósfera superior es significativamente más fría y más compacta de lo previsto.
- El nitrógeno molecular (N2) es el gas dominante, con metano (CH4) y otros hidrocarburos como especies menores.
- La atmósfera superior fría inhibe el escape atmosférico al espacio.
- Hay una extensa capa de neblina, probablemente alimentada por especies de hidrocarburos.
Conclusiones:
- Las observaciones de New Horizons proporcionan una instantánea detallada de las condiciones atmosféricas actuales de Plutón.
- La atmósfera superior fría y compacta observada contradice los modelos anteriores.
- El escape atmosférico reducido tiene implicaciones para la evolución atmosférica a largo plazo de Plutón.
- Se necesita más investigación para determinar si el estado atmosférico actual es representativo de las condiciones promedio de Plutón en escalas de tiempo más largas.
Videos de Conceptos Relacionados
Kepler's First Law of Planetary Motion
6.0K
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,...
6.0K
Kepler's Second Law of Planetary Motion
5.7K
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...
While in an elliptical orbit, the total energy of the planet is conserved. Therefore, the planet slows down when it is at apogee and...
5.7K
Kepler's Third Law of Planetary Motion
4.5K
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...
4.5K
Schwarzschild Radius and Event Horizon
2.9K
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...
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...
2.9K
Acceleration due to Gravity on Other Planets
5.1K
The gravitational acceleration of an object near the Earth's surface is called the acceleration due to gravity. It can be measured by conducting simple experiments on Earth. However, such an experiment is impossible to conduct on the surface of other planets.
Astronomical observations are thus used to measure the acceleration due to gravity on other planets. This can be determined by observing the effect of a planet's gravity on objects close to it. The crucial factor that helps in this...
Astronomical observations are thus used to measure the acceleration due to gravity on other planets. This can be determined by observing the effect of a planet's gravity on objects close to it. The crucial factor that helps in this...
5.1K
Detection of Black Holes
2.6K
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...
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...
2.6K

