NASA’s Mars Reconnaissance Orbiter (MRO) has been in orbit round Mars for nearly 14 years. It carries quite a lot of devices with it, together with the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) instrument. That instrument has collected 1000’s of pictures of Mars.
CRISM’s important function is to created detailed maps of the floor mineralogy of Mars. It may detect iron, oxides, phyllosilicates (clays,) and carbonates. All of those supplies are indications that Mars was moist prior to now, or remains to be moist now.
Often, CRISM pictures are paired with Excessive Decision Imaging Science Experiment (HiRISE) pictures of the identical space. HiRISE is one in every of three cameras on the MRO, and probably the most highly effective. In reality, HiRISE is a reflecting telescope, the biggest ever carried on a deep house mission. It may picture the floor of Mars in nice element, and NASA makes HiRISE pictures accessible on the web site.
HiRISE captures colour pictures at excessive resolutions. The CRISM instrument can inform us in regards to the chemical properties of its pictures, however its decision is proscribed to about 18 meters/pixel, a lot decrease than HiRISE’s zero.three meters/pixel. The HiRISE workforce makes use of each of the devices collectively typically.
Once they’re imaging a area with compositional variety, HiRISE can map compositional models at a better decision than CRISM. The workforce makes a strong pair relating to understanding the variations between compositional models, and likewise when investigating potential touchdown websites, like the positioning for MSL Curiosity.
This HiRISE Image of the Day (HiPOD) reveals sandstone within the West Candor Chasma, in Valles Marineris. It captures the sweetness that persists, even on a chilly, dry, and sure useless world. The scalloped ridges beg to be explored.
The HiPOD gallery is a pleasant place to spend a while, and the gallery comprises pictures exhibiting the numerous totally different faces of Mars. The picture beneath is of some sand dunes.
On Mars, sand dunes are blown round by the wind, slowly shifting throughout the floor. However these dunes are frozen in place in south Melas Chasma, the widest a part of the Valles Marineris.
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