scholarly journals Reply to Comment by F. Kenig, L. Chou, and D. J. Wardrop on “Evaluation of the Tenax Trap in the Sample Analysis at Mars Instrument Suite on the Curiosity Rover as a Potential Hydrocarbon Source for Chlorinated Organics Detected in Gale Crater” by Miller et al., 2015

2019 ◽  
Vol 124 (2) ◽  
pp. 648-650
Author(s):  
Roger E. Summons ◽  
Kristen E. Miller ◽  
Benjamin Kotrc ◽  
Imene Belmahadi ◽  
Arnaud Buch ◽  
...  
Keyword(s):  
Sample Analysis ◽  
Chlorinated Organics ◽  
Gale Crater ◽  
Curiosity Rover

MORPHOLOGICAL DIVERSITY OF MARTIAN EOLIAN BEDFORMS AS REVEALED BY THE CURIOSITY ROVER AT GALE CRATER, MARS

2017 ◽  
Author(s):  
Mathieu G.A. Lapotre ◽  
◽  
Ryan C. Ewing ◽  
Ryan C. Ewing ◽  
Michael P. Lamb ◽  
...  
Keyword(s):  
Morphological Diversity ◽  
Gale Crater ◽  
Curiosity Rover

scholarly journals Scientists Turn Back Time to Track Methane Emissions on Mars

Eos ◽  
2022 ◽  
Vol 103 ◽  
Author(s):  
JoAnna Wendel
Keyword(s):  
Methane Emissions ◽  
Gale Crater ◽  
Curiosity Rover

Period spikes of methane on Mars could originate inside Gale crater, where NASA’s Curiosity rover is currently exploring.s

A surface gravity traverse on Mars indicates low bedrock density at Gale crater

Science ◽  
2019 ◽  
Vol 363 (6426) ◽  
pp. 535-537 ◽  
Author(s):  
Kevin W. Lewis ◽  
Stephen Peters ◽  
Kurt Gonter ◽  
Shaunna Morrison ◽  
Nicholas Schmerr ◽  
...  
Keyword(s):  
Gravitational Field ◽  
Precise Measurement ◽  
Attitude Determination ◽  
Sedimentary Rocks ◽  
Gravitational Acceleration ◽  
High Porosity ◽  
Rock Density ◽  
Gravitational Fields ◽  
Gale Crater ◽  
Curiosity Rover

Gravimetry, the precise measurement of gravitational fields, can be used to probe the internal structure of Earth and other planets. The Curiosity rover on Mars carries accelerometers normally used for navigation and attitude determination. We have recalibrated them to isolate the signature of the changing gravitational acceleration as the rover climbs through Gale crater. The subsurface rock density is inferred from the measured decrease in gravitational field strength with elevation. The density of the sedimentary rocks in Gale crater is 1680 ± 180 kilograms per cubic meter. This value is lower than expected, indicating a high porosity and constraining maximum burial depths of the rocks over their history.

scholarly journals Evidence for indigenous nitrogen in sedimentary and aeolian deposits from the Curiosity rover investigations at Gale crater, Mars

2015 ◽  
Vol 112 (14) ◽  
pp. 4245-4250 ◽  
Author(s):  
Jennifer C. Stern ◽  
Brad Sutter ◽  
Caroline Freissinet ◽  
Rafael Navarro-González ◽  
Christopher P. McKay ◽  
...  
Keyword(s):  
Nitrogen Cycle ◽  
Volcanic Plume ◽  
Science Laboratory ◽  
Fixed Nitrogen ◽  
Total N ◽  
Gale Crater ◽  
Sedimentary Deposits ◽  
Aeolian Deposits ◽  
Aeolian Sediments ◽  
Curiosity Rover

The Sample Analysis at Mars (SAM) investigation on the Mars Science Laboratory (MSL) Curiosity rover has detected oxidized nitrogen-bearing compounds during pyrolysis of scooped aeolian sediments and drilled sedimentary deposits within Gale crater. Total N concentrations ranged from 20 to 250 nmol N per sample. After subtraction of known N sources in SAM, our results support the equivalent of 110–300 ppm of nitrate in the Rocknest (RN) aeolian samples, and 70–260 and 330–1,100 ppm nitrate in John Klein (JK) and Cumberland (CB) mudstone deposits, respectively. Discovery of indigenous martian nitrogen in Mars surface materials has important implications for habitability and, specifically, for the potential evolution of a nitrogen cycle at some point in martian history. The detection of nitrate in both wind-drifted fines (RN) and in mudstone (JK, CB) is likely a result of N2 fixation to nitrate generated by thermal shock from impact or volcanic plume lightning on ancient Mars. Fixed nitrogen could have facilitated the development of a primitive nitrogen cycle on the surface of ancient Mars, potentially providing a biochemically accessible source of nitrogen.

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