حجم هذا العرض: 600 × 600 بكسل
الصورة بدقة كاملة (800 × 800 بكسل، حجم الملف: 79 كيلوبايت، نوع الملف: image/jpeg)
This image was copied from wikipedia:fr. The original description was:
- description
- Global mosaic of Mars. Visible in the center of this mosaic is the largest known chasm in the solar system, Valles Marineris. Reproduced from Volume 14 of the Mars Digital Image Model (MDIM) CD-ROM set.
- source
- http://nssdc.gsfc.nasa.gov/photo_gallery/photogallery-mars.html, http://nssdc.gsfc.nasa.gov/image/planetary/mars/marsglobe1.jpg
- copyright
- domaine public
- crédit
- Image Processing by Jody Swann/Tammy Becker/Alfred McEwen, using the PICS (Planetary Image Cartography System) image processing system developed at the U.S. Geological Survey in Flagstaff, Arizona.
- version réduite
- fr::Image:Marsglobe1-192x192.jpg fr:Image:Marsglobe1-192x192.jpg
Valles Marineris - Point Perspective ------------------------------------
Mosaic of the Valles Marineris hemisphere of Mars projected into point perspective, a view similar to that which one would see from a spacecraft. The viewer's distance is 2,500 kilometers from the surface of the planet. The mosaic is composed of 102 Viking Orbiter images of Mars. The center of the scene (lat -7, lon 78) shows the entire Valles Marineris canyon system, over 3,000 kilometers long and up to 8 kilometers deep, extending from Noctis Labyrinthus, the arcuate system of graben to the west, to the chaotic terrain to the east. Many huge ancient river channels begin from the chaotic terrain and north-central canyons and run north. Many of the channels flowed into a basin called Acidalia Planitia, which is the dark area in the extreme north of this picture. The three Tharsis volcanoes (dark red spots), each about 25 kilometers high, are visible to the west. South of Valles Marineris is very ancient terrain covered by many impact craters.
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This file is in the public domain because it was created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (NASA copyright policy page or JPL Image Use Policy).
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