ASTRONOMY: Mars' Newton Crater

Hi My Friends: A VUELO DE UN QUINDE EL BLOG., Newton is a large crater on Mars, with a diameter close to 300 km. It is located south of the planet's equator in the heavily cratered highlands of Terra Sirenum. The impact that formed Newton likely occurred more than 3 billion years ago. The crater was named in 1973 in honour of Sir Isaac Newton. Mars' Newton Crater
This image, which combines orbital imagery with 3-D modeling, shows flows that appear in spring and summer on a slope inside Mars' Newton Crater. Sequences of observations recording the seasonal changes at this site and a few others with similar flows might be evidence of salty liquid water active on Mars today. Evidence for that possible interpretation is presented in a report by McEwen et al. in the Aug. 5, 2011, edition of Science.

This image has been reprojected to show a view of a slope as it would be seen from a helicopter inside the crater, with a synthetic Mars-like sky. The source observation was made May 30, 2011, by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter. Color has been enhanced. The season was summer at the location, 41.6 degrees south latitude, 202.3 degrees east longitude.

The flow features are narrow (one-half to five yards or meters wide), relatively dark markings on steep (25 to 40 degree) slopes at several southern hemisphere locations. Repeat imaging by HiRISE shows the features appear and incrementally grow during warm seasons and fade in cold seasons.

Image Credit: NASA/JPL-Caltech/Univ. of Arizona
Guillermo Gonzalo Sánchez Achutegui
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