id=”article-overall body” course=”row” portion=”write-up-human body”> The Curiosity rover collected the images for this selfie on Could thirteen, 2019, which corresponds to Sol 2405 on Mars.nnNASA/JPL-Caltech/MSSS/Kevin M. Gill Curiosity, NASA’s SUV-sized roaming laboratory doing work on Mars, has been at the heart of a quantity of Martian mysteries during its seven-year stint on the crimson world. In June, its Sample Investigation at Mars instrument detected a surprising spike in methane gas that puzzled NASA scientists. The mystery of Mars methane has been partly resolved, but now Curiosity has uncovered a further baffling Martian puzzle: Oxygen is performing strangely and experts never really recognize why.nnNew analysis, published in the Journal of Geophysical Exploration: Planets on Tuesday, specifics an just about six-12 months-lengthy air-sampling task done in Gale Crater, the place Curiosity has been paying out most of its time. Utilizing the SAM instrument, the transportable lab that detected the methane spike, NASA experts observed “substantial seasonal and yr-to-yr variability” in the oxygen material. This is bizarre.nnThe SAM instrument is equipped to assess what molecules make up the Martian atmosphere. The ambiance on the pink planet is made up mostly of carbon dioxide, but during winter season, CO2 freezes about the poles, which lowers air pressure across the earth. For the duration of the thaw, in summertime and spring, the CO2 raises air tension. Scientists see molecules like nitrogen and argon adjust in concentration according to the period, too.nnBut oxygen acted in different ways. It only tends to make up a very small quantity of the Martian atmosphere (about .16%), chemicals news but it will not stick to the envisioned rises and falls. All through spring and summer months, the focus of oxygen was substantially increased than expected. In tumble, it dropped again to predicted amounts. Then in winter season, it fell below predicted stages. What is actually likely on in this article?nn”The fact that the oxygen habits is just not flawlessly repeatable just about every year will make us assume that it can be not an situation that has to do with atmospheric dynamics,” Melissa Coach, a planetary researchers at NASA’s Goddard Room Flight Centre and initial creator on the new examine, reported in a press release. “It has to be some chemical resource and sink that we won’t be able to however account for.”nnThe research team is struggling to reveal this, just like other NASA experts are battling to make clear the strange methane spikes witnessed before in the yr. The info implies a correlation involving methane and oxygen fluctuations during the calendar year. Could there be a backlink involving the two? It can be an intriguing prospect, but just one that researchers are but to thoroughly recognize. nnOf program, the query that constantly arrives up with these unusual Mars discoveries: Does this signify there is everyday living buried somewhere in the Martian grime? Possibly not — and it is really impossible for Curiosity to know, because it won’t have the instrumentation on board to carry out experiments that would check for extraterrestrials. Having said that, when NASA’s as-nevertheless-unnamed Mars 2020 rover reaches its vacation spot in 2021, a clearer comprehension of existence on Mars need to be forthcoming.