Video Experimental Relacionado
Updated: Jul 26, 2025

06:04
Simulation of the Planetary Interior Differentiation Processes in the Laboratory
Published on: November 15, 2013
11.6K
Estado de giro y estructura interior profunda de Marte desde el seguimiento de radio de InSight
Sébastien Le Maistre1,2, Attilio Rivoldini3, Alfonso Caldiero3,4
1Royal Observatory of Belgium, Brussels, Belgium. sebastien.lemaistre@oma.be.
Nature
|June 14, 2023
Resumen
La misión InSight
Área de la Ciencia:
- Ciencias planetarias
- La geofísica
- Astrogeología
Sus antecedentes:
- Comprender la estructura interior y la atmósfera de Marte es clave para su formación y evolución.
- Los interiores planetarios no son directamente accesibles, lo que hace que los datos geofísicos globales sean difíciles de interpretar.
- La misión InSight de la NASA proporcionó datos sísmicos y de radiociencia cruciales.
Objetivo del estudio:
- Para determinar las propiedades fundamentales del núcleo, el manto y la atmósfera de Marte.
- Para caracterizar el núcleo marciano y el manto por separado utilizando datos de la ciencia de la radio.
- Para investigar las anomalías dentro del interior marciano y la tasa de rotación.
Principales métodos:
- La medición precisa de la rotación planetaria marciana.
- Detección de una resonancia en modo normal.
- Análisis de los datos de seguimiento de radio de InSight.
Principales resultados:
- Se determinó el radio del núcleo líquido (1.835 ± 55 km) y la densidad (5.9556.290 kg m−3).
- Aumento caracterizado de la densidad en el límite núcleo-manto (1.6902.110 kg m−3).
- Argumentó en contra de un núcleo interno sólido y reveló la forma del núcleo, lo que indica anomalías de masa del manto.
- Encontramos evidencia de una lenta aceleración en la velocidad de rotación marciana.
Conclusiones:
- Los datos de la misión InSight permitieron una caracterización detallada de la estructura interna de Marte.
- Los resultados sugieren anomalías de masa interna dentro del manto marciano.
- La aceleración de rotación observada puede estar relacionada con la dinámica interna o los cambios atmosféricos o de la capa de hielo.
Videos de Conceptos Relacionados
Torque Free Motion
517
The torque-free motion refers to the movement of a rigid body in space when no external torques are acting upon it. This type of motion can be observed in environments where there are no external forces or frictions, like in outer space. For example, a rotation of Mars in space is a torque-free motion. Mars is an axisymmetric object, meaning it has an axis of symmetry along which it rotates, designated as the z-axis. The rotating frame of reference is defined such that the center of mass of...
517
Magnetic Field Lines
4.2K
The representation of magnetic fields by magnetic field lines is very useful in visualizing the strength and direction of the magnetic field. Each of the magnetic field lines forms a closed loop. The field lines emerge from the north pole (N), loop around to the south pole (S), and continue through the bar magnet back to the north pole.
Magnetic field lines follow several hard-and-fast rules:
Magnetic field lines follow several hard-and-fast rules:
4.2K
Magnetic Susceptibility and Permeability
1.2K
In linear magnetic materials, like paramagnets and diamagnets, magnetization is proportional to the magnetic field intensity. The constant of proportionality, a dimensionless number, is called magnetic susceptibility. The value of the susceptibility depends on the type of material.
When diamagnetic materials are placed under an external magnetic field, the moments opposite to the field are induced. Hence, the susceptibility for diamagnets has a minimal negative value of 10-5–10-6. Since...
When diamagnetic materials are placed under an external magnetic field, the moments opposite to the field are induced. Hence, the susceptibility for diamagnets has a minimal negative value of 10-5–10-6. Since...
1.2K
Magnetic Field due to Moving Charges
8.9K
A stationary charge creates and interacts with the electric field, while a moving charge creates a magnetic field.
Consider a point charge moving with a constant velocity. Like the electric field, the magnetic field at any point is directly proportional to the magnitude of the charge and inversely proportional to the square of the distance between the source point and the field point. However, unlike the electric field, the magnetic field is always perpendicular to the plane containing the line...
Consider a point charge moving with a constant velocity. Like the electric field, the magnetic field at any point is directly proportional to the magnitude of the charge and inversely proportional to the square of the distance between the source point and the field point. However, unlike the electric field, the magnetic field is always perpendicular to the plane containing the line...
8.9K
Gyroscope: Precession
4.5K
Precession can be demonstrated effectively through a spinning top. If a spinning top is placed on a flat surface near the surface of the Earth at a vertical angle and is not spinning, it will fall over due to the force of gravity producing a torque acting on its center of mass. However, if the top is spinning on its axis, it precesses about the vertical direction, rather than topple over due to this torque. Precessional motion is a combination of a steady circular motion of the axis and the...
4.5K
Magnetism
6.4K
Magnets are commonly found in everyday objects, such as toys, hangers, elevators, doorbells, and computer devices. Experimentation on these magnets shows that all magnets have two poles: one is labeled north (N) and the other south (S). Magnetic poles repel if they are alike and attract if unlike. Moreover, both poles of a magnet attract unmagnetized pieces of iron.
An individual magnetic pole cannot be isolated. No matter how small, every piece of a magnet contains a north pole and a south...
An individual magnetic pole cannot be isolated. No matter how small, every piece of a magnet contains a north pole and a south...
6.4K

