id=”write-up-physique” course=”row” section=”article-entire body”> The Curiosity rover gathered the photographs for this selfie on Might thirteen, 2019, which corresponds to Sol 2405 on Mars.nnNASA/JPL-Caltech/MSSS/Kevin M. Gill Curiosity, NASA’s SUV-sized roaming laboratory operating on Mars, has been at the heart of a amount of Martian mysteries for the duration of its seven-12 months stint on the purple earth. In June, its Sample Assessment at Mars instrument detected a surprising spike in methane fuel that puzzled NASA researchers. The mystery of Mars methane has been partly resolved, but now Curiosity has uncovered an additional baffling Martian puzzle: Oxygen is acting unusually and scientists never seriously fully grasp why.nnNew exploration, posted in the Journal of Geophysical Research: Planets on Tuesday, facts an virtually six-year-extended air-sampling challenge performed in Gale Crater, the place Curiosity has been paying most of its time. Employing the SAM instrument, the moveable lab that detected the methane spike, NASA scientists discovered “considerable seasonal and calendar year-to-yr variability” in the oxygen articles. This is odd.nnThe SAM instrument is equipped to analyze what molecules make up the Martian ambiance. The atmosphere on the red world consists typically of carbon dioxide, chemicals news but for the duration of winter season, CO2 freezes over the poles, which lowers air force across the planet. Through the thaw, in summer season and spring, the CO2 raises air strain. Researchers see molecules like nitrogen and argon improve in focus in accordance to the time, also.nnBut oxygen acted differently. It only can make up a very small sum of the Martian environment (around .sixteen%), but it will not stick to the envisioned rises and falls. Throughout spring and summertime, the concentration of oxygen was a great deal bigger than envisioned. In slide, it dropped back to predicted stages. Then in winter season, it fell beneath predicted ranges. What is actually heading on right here?nn”The point that the oxygen behavior isn’t properly repeatable every single season will make us believe that it really is not an issue that has to do with atmospheric dynamics,” Melissa Coach, a planetary scientists at NASA’s Goddard Space Flight Center and to start with author on the new research, explained in a push launch. “It has to be some chemical resource and sink that we can’t nevertheless account for.”nnThe investigation team is battling to make clear this, just like other NASA scientists are having difficulties to demonstrate the unusual methane spikes noticed previously in the calendar year. The data indicates a correlation in between methane and oxygen fluctuations all through the year. Could there be a hyperlink concerning the two? It’s an intriguing prospect, but a single that scientists are still to absolutely recognize. nnOf system, the problem that usually arrives up with these unusual Mars discoveries: Does this mean there is lifetime buried somewhere in the Martian dust? In all probability not — and it can be extremely hard for Curiosity to know, since it will not have the instrumentation on board to carry out experiments that would test for extraterrestrials. Nonetheless, when NASA’s as-but-unnamed Mars 2020 rover reaches its vacation spot in 2021, a clearer comprehension of life on Mars should really be forthcoming.