Tuesday, March 8, 2016

Mars’ Sand Composition...Get the scoop, right here!

Credits: NASA/JPL-Caltech

The In-Situ Martian Rock Analysis (CHIMRA) device can analyze and observe sand samples from the Bagnold Dunes, an area of dark sand dunes along the northwestern flank of Mars’ Mount Sharp. HereHere, active sand dunes have been discovered. Studying them will help us understand Mars’ environment. Further, it will contribute to the mission's interpretation of Mars’ composition variations and patterns in “ancient sandstones that formed from wind or flowing water.

CHIMRA allows NASA researchers to rely on the most effective analytical skills without being physically in contact with the machine during the process. CHIMRA processes the samples collected with the aid of the built-in-scoop and the drill, and also delivers these samples to the analytical lab instruments found inside the Mars Curiosity Rover.

This device is composed of multiple machineries. First, the scoop delivers the material to a certain location and the drill deposits the material to the sample transfer tube. Then, using the CHIMRA’s vibration mechanism, which allows shaking the turret then causing the sample to move inside the CHIMRA. The sample later passes on to the portion box where the samples are processed through a sieve. Finally, the samples are delivered to the analytical lab instruments of the Mars Curiosity rover.

This is in fact one of the most impressive feats of engineering: being able to rely and trust an analytical process without requiring human supervision. Engineering machines such as CHIMRA would guarantee that the Mars mission will help unravel many of Mars soil mysteries.

Engineering Group “A": Maria Guirado, Arianna Alonso, Flavio Rodriguez

Works Cited

NASA Mars Rover Curiosity Tastes Scooped, Sieved Sand” nasa.gov., 1-21-2016; Web 1-22-16, 2016   

Mars and Earth Could Almost Be Twins!

Dublin Scools.net
NASA












NASA recently discovered that there are andesite rocks on Mars’ surface.

            What is the impact of this discovery? It is now known that Mars is a lot more like Earth than what was previously expected.

            Earlier, scientists and geologists expected to identify rocks on Mars as “mafic and ultramafic igneous rocks, volcanic and intrusive” with low amounts of silicon and high amounts of iron and magnesium: essentially, basalts. They believed they would find these types of rocks on Mars because of the composition of Martian meteorites and because of the existing plains and mountains are presumable formed from basaltic volcanism similarly to those formed on Earth.
           
            Using the Pathfinder machine, scientists discovered that there was a much higher content of silicon on these rocks than what they were expecting to find; these rocks are, therefore, classified as andesite.

Earth’s Andesite rock.  [Geology.com]     
There are still no implications relating to this discovery of the observed rocks since their origins are unknown but the results could suggest that the “crust on Mars is similar in composition to continental crust on earth” or that these rocks represent a minimal part of the basaltic plain on Mars.


Chemistry Group “A”: Adrian Dopico, Marilyn Machuca, Joseph Martinez