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jueves, 14 de enero de 2016

NASA : Starburst Spider .- Starburst araña

Hola amigos: A VUELO DE UN QUINDE EL BLOG., Casquillo estacional de Marte de hielo de dióxido de carbono ha erosionado muchos terrenos hermosas, ya que sublima (pasa directamente de hielo a vapor) cada primavera. En la región donde la cámara Experimento Imágenes de Alta Resolución Science (HiRISE) de Mars Reconnaissance Orbiter de la NASA tomó esta imagen, vemos valles que forman un patrón de estallido estelar. En otras áreas de estos canales radiales se han referido como arañas, simplemente debido a su forma. En esta región el patrón se ve más dendríticas como canales ramifican varias veces a medida que más lejos del centro.
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Dark spidery bedforms imaged from Mars orbit
Mars' seasonal cap of carbon dioxide ice has eroded many beautiful terrains as it sublimates (goes directly from ice to vapor) every spring. In the region where the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter took this image, we see troughs that form a starburst pattern. In other areas these radial troughs have been refered to as spiders, simply because of their shape. In this region the pattern looks more dendritic as channels branch out numerous times as they get further from the center.
The troughs are believed to be formed by gas flowing beneath the seasonal ice to openings where the gas escapes, carrying along dust from the surface below. The dust falls to the surface of the ice in fan-shaped deposits.
This image, covering an area about 1 kilometer (0.6 mile) across, is a portion of the HiRISE observation catalogued as ESP_011842_0980, taken on Feb. 4, 2009. The observation is centered at 81.8 degrees south latitude, 76.2 degrees east longitude. The image was taken at a local Mars time of 4:56 p.m. and the scene is illuminated from the west with a solar incidence angle of 78 degrees, thus the sun was about 12 degrees above the horizon. At a solar longitude of 203.6 degrees, the season on Mars is northern autumn.
NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Mars Reconnaissance Orbiter for NASA's Science Mission Directorate, Washington. Lockheed Martin Space Systems, Denver, is the prime contractor for the project and built the spacecraft. The High Resolution Imaging Science Experiment is operated by the University of Arizona, Tucson, and the instrument was built by Ball Aerospace & Technologies Corp., Boulder, Colo.

Image Credit: NASA/JPL-Caltech/University of Arizona
Last Updated: Jan. 11, 2016
Editor: NASA Administrator
Guillermo Gonzalo Sánchez Achutegui
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