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Comment fonctionne notre forum => Accueil => Discussion démarrée par: MethrenRaf le Janvier 17, 2025, 03:46:33 am
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Last year, a scientific debate began when a team of scientists announced they had detected phosphine, a gas that is produced by some microorganisms and thus considered a biosignature, in Venuss聽atmosphere. Further studies immediately complicated that result, and earlier this year another team said the gas wasnt phosphine at all but sulfur dioxide. The recent teams findings, published today in the Proceedings of the National Academy of Sciences, indicate that Venus could have active volcanoes, something planetary scientists have long been unsure about. The principle is this: Venuss deep mantle could contain phosphorus compounds, called phosphides, which could be belched into the atmosphere by the planets volcanoes in the form of volcanic dust. With enough explosive force鈥攖he researchers described the necessary force as that of Earths Krakatoa or even the Yellowstone supervolcano鈥攖hat dust could be blasted high into the planets s stanley cup (https://www.cup-stanley.us) ulfuric acid-clouded atmosphere. There, the phosphides would react with the sulfuric acid to produce phosphine. A 1991 simulated-color radar image of Maat Mons, a Venusian vo stanley quencher (https://www.stanley-quencher.co.uk) lcano, taken by the Magellan spacecraft. Image: NASA/JPL The phosphine is not telling us about the biology of Venus, said Jonathan Lunine, a pla stanley mug (https://www.stanley-cup.fr) netary scientist at Cornell University and co-author of the paper, in a university press release. Its telling us about the geology. Science is pointing to a planet that has active explosive volcanism today or in the very recent past. Lisq How to Fix iOS 15 s Worst Feature
New results from a simulation continue to paint a strange picture of our noxious neighbor. It seems that an interaction between the planets mo stanley nz (https://www.stanley-cup.co.nz) untains and its atmosphere could create waves strong enough to change the length of a Venusian day by up to two minutes. Lets paint a picture of the wacky planet were dealing with here. A full rotation takes Venus 243 Earth days, while a single orbit around the Sun takes 225 days. However, the planet rotates in the opposite direction as Earth, so if we consider a day as the planet making one full turn, then the Sun actually rises twice during a single day on Venus. Meanwhile, its cloud tops orbit the planet once every four Earth days, and the atmosphere at its surface is around 90 times denser than Earths at sea level. The Japan Aerospace Exploration Agency has a spacecraft orbiting Venus called Akatsuki. Its already made some important observations, like an enormous atmospheric anomaly, a bow-like structure in the planets clouds that appears not to move despite the fast winds below. The team behind the mission h stanley tumbler (https://www.cups-stanley.ca) ypothesized that this persistent structure is the result of a wave produced when the planets speedy winds run up against its mountains, like water flowing over a stanley becher (https://www.cup-stanley.de) big rock in a river. Two researchers from UCLA and another from the University of Paris-Saclay in France popped Akatsukis data into a model of Venus atmosphere, and the simulation agreed with the previous hypothesis that the strange anomaly was a gravity wave re