File:Ganymede-moon.jpg
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editDescriptionGanymede-moon.jpg |
English: In this global view of Ganymede's trailing side, the colors are enhanced to emphasize color differences. The enhancement reveals frosty polar caps in addition to the two predominant terrains on Ganymede, bright, grooved terrain and older, dark furrowed areas. Many craters with diameters up to several dozen kilometers are visible. The violet hues at the poles may be the result of small particles of frost which would scatter more light at shorter wavelengths (the violet end of the spectrum). Ganymede's magnetic field, which was detected by the magnetometer on NASA's Galileo spacecraft in 1996, may be partly responsible for the appearance of the polar terrain. Compared to Earth's polar caps, Ganymede's polar terrain is relatively vast. The frost on Ganymede reaches latitudes as low as 40 degrees on average and 25 degrees at some locations. For comparison with Earth, Miami, Florida lies at 26 degrees north latitude, and Berlin, Germany is located at 52 degrees north.
North is to the top of the picture. The composite, which combines images taken with green, violet, and 1 micrometer filters, is centered at 306 degrees west longitude. The resolution is 9 kilometers (6 miles) per picture element. The images were taken on 29 March 1998 at a range of 918000 kilometers (570,000 miles) by the Solid State Imaging (SSI) system on NASA's Galileo spacecraft.
Español: En esta visión global de la cara posterior de Ganímedes, los colores se han mejorado para resaltar las diferencias de color. La mejora revela casquetes polares helados, además de los dos terrenos predominantes en Ganímedes, brillantes, con surcos del terreno y las zonas acanaladas mayores, oscuras. Muchos cráteres con diámetros de hasta varias decenas de kilómetros son visibles. Las tonalidades de color violeta en los polos pueden ser el resultado de pequeñas partículas de hielo que dispersen la luz en longitudes de onda más cortas (del extremo violeta del espectro). El campo magnético de Ganímedes, que fue detectado por el magnetómetro de la nave espacial Galileo de la NASA en 1996, puede ser en parte responsable de la aparición del terreno del polo. En comparación con los casquetes polares de la Tierra, el terreno del polo de Ganímedes es relativamente amplio. La escarcha en Ganímedes llega a latitudes tan bajas como 40 grados en promedio y 25 grados en algunas localidades. Para la comparación con la Tierra, Miami (Florida) se encuentra a 26 grados de latitud norte, y Berlín (Alemania) se encuentra en 52 grados norte.
La parte superior de la imagen representa la parte norte del satélite. La imagen compuesta, que combina imágenes tomadas con filtroa verde, violeta, y de 1 micrómetro, está centrada en 306 grados de longitud oeste. La resolución es de 9 kilómetros (6 millas) por elemento de imagen. Las imágenes fueron tomadas el 29 de marzo de 1998 en un rango de 918.000 kilómetros (570.000 millas) por el sistema de imágenes de estado sólido (SSI) en la nave espacial Galileo de la NASA. |
Date | |
Source | Ganymede's Trailing Hemisphere |
Author | NASA/JPL/DLR |
Licensing
editPublic domainPublic domainfalsefalse |
This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) | ||
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 07:58, 22 March 2015 | 687 × 687 (47 KB) | Jcpag2012 (talk | contribs) | high-res | |
21:38, 4 August 2006 | 577 × 577 (62 KB) | Ramjar (talk | contribs) | Imagen en colores de Ganímedes, satélite del planeta Júpiter. Imagen extraída del sitio http://www.on.br/glossario/alfabeto/g/ganimedes.html por cortesía de la NASA. |
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