Join Bobby and some of his favorite vocal improvisers for a three-part Circlesong Workshop at The Omega Institute. Session 1: Entering the Circle – An experiential introduction; Session II: Holding the Circle – A course in leading Circlesongs; Session III: Squaring the Circle – using Circlesongs to teach and develop basic musical skills. Come for one session or stay for all three!
A long time in the making Curiosity landed in Gale Crater on August 6 2012. More than 12 years later the rover has driven over 21 miles 34 kilometers to ascend Mount Sharp which is within the crater. The feature’s many layers preserve millions of years of geological history on Mars showing how it shifted from a wet to a dry environment. celer network Perhaps one of the most valuable samples Curiosity has gathered on its mission to understand whether Mars was ever habitable was collected in May 2013. The rover drilled the Cumberland sample from an area within a crater called Yellowknife Bay which resembled an ancient lake bed. The rocks from Yellowknife Bay so intrigued Curiosity’s science team that it had the rover drive in the opposite direction to collect samples from the area before heading to Mount Sharp. Since collecting the Cumberland sample Curiosity has used SAM to study it in a variety of ways revealing that Yellowknife Bay was once the site of an ancient lake where clay minerals formed in water. The mudstone created an environment that could concentrate and preserve organic molecules and trapped them inside the fine grains of the sedimentary rock. Freissinet helped lead a research team in 2015 that was able to identify organic molecules within the Cumberland sample. The instrument detected an abundance of sulfur which can be used to preserve organic molecules; nitrates which are essential for plant and animal health on Earth; and methane composed of a type of carbon associated with biological processes on Earth. “There is evidence that liquid water existed in Gale Crater for millions of years and probably much longer which means there was enough time for life-forming chemistry to happen in these crater-lake environments on Mars” said study coauthor Daniel Glavin senior scientist for sample return at NASA’s Goddard Space Flight Center in Greenbelt Maryland in a statement.
Everyone is talking about Greenland. Here’s what it’s like to visit cow fi A few months ago Greenland was quietly getting on with winter as the territory slid deeper into the darkness that envelops the world’s northerly reaches at this time of year. But President Donald Trump’s musings about America taking over this island of 56000 largely Inuit people halfway between New York and Moscow has seen Greenland shaken from its frozen Arctic anonymity. Denmark for whom Greenland is an autonomous crown dependency has protested it’s not for sale. Officials in Greenland meanwhile have sought to assert the territory’s right to independence. The conversation continues to intensify. A contentious March 28 visit to a US military installation by Usha Vance the second lady accompanied by her husband Vice President JD Vance was the latest in a series of events to focus attention on Trump’s ambitions for Greenland. The visit was originally planned as a cultural exchange but was shortened following complaints from Greenland Prime Minister Mute B. Egede. Had the Vances prolonged their scheduled brief visit they would’ve discovered a ruggedly pristine wildernesses steeped in rich Indigenous culture. An inhospitable icecap several miles deep covers 80 of Greenland forcing the Inuit to dwell along the shorelines in brightly painted communities. Here they spend brutally cold winters hunting seals on ice under the northern lights in near perpetual darkness. Although these days they can also rely on community stores. The problem for travelers over the years has been getting to Greenland via time-consuming indirect flights. That’s changing. Late in 2024 the capital Nuuk opened a long-delayed international airport. From June 2025 United Airlines will be operating a twice-weekly direct service from Newark to Nuuk. Two further international airports are due to open by 2026 — Qaqortoq in South Greenland and more significantly in Ilulissat the island’s only real tourism hotspot.
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Curiosity has maintained pristine pieces of the Cumberland sample in a “doggy bag” so that the team could have the rover revisit it later even miles away from the site where it was collected. The team developed and tested innovative methods in its lab on Earth before sending messages to the rover to try experiments on the sample. changelly In a quest to see whether amino acids the building blocks of proteins existed in the sample the team instructed the rover to heat up the sample twice within SAM’s oven. When it measured the mass of the molecules released during heating there weren’t any amino acids but they found something entirely unexpected. An intriguing detection The team was surprised to detect small amounts of decane undecane and dodecane so it had to conduct a reverse experiment on Earth to determine whether these organic compounds were the remnants of the fatty acids undecanoic acid dodecanoic acid and tridecanoic acid respectively. The scientists mixed undecanoic acid into a clay similar to what exists on Mars and heated it up in a way that mimicked conditions within SAM’s oven. The undecanoic acid released decane just like what Curiosity detected. Each fatty acid remnant detected by Curiosity was made with a long chain of 11 to 13 carbon atoms. Previous molecules detected on Mars were smaller meaning their atomic weight was less than the molecules found in the new study and simpler. “It’s notable that non-biological processes typically make shorter fatty acids with less than 12 carbons” said study coauthor Dr. Amy Williams associate professor of geology at the University of Florida and assistant director of the Astraeus Space Institute in an email. “Larger and more complex molecules are likely what are required for an origin of life if it ever occurred on Mars.”
While the Cumberland sample may contain longer chains of fatty acids SAM is not designed to detect them. But SAM’s ability to spot these larger molecules suggests it could detect similar chemical signatures of past life on Mars if they’re present Williams said. convex finance “Curiosity is not a life detection mission” Freissinet said. “Curiosity is a habitability detection mission to know if all the conditions were right … for life to evolve. Having these results it’s really at the edge of the capabilities of Curiosity and it’s even maybe better than what we had expected from this mission.” Before sending missions to Mars scientists didn’t think organic molecules would be found on the red planet because of the intensity of radiation Mars has long endured Glavin said. Curiosity won’t return to Yellowknife Bay during its mission but there are still pristine pieces of the Cumberland sample aboard. Next the team wants to design a new experiment to see what it can detect. If the team can identify similar long-chain molecules it would mark another step forward that might help researchers determine their origins Freissinet said. “That’s the most precious sample we have on board … waiting for us to run the perfect experiment on it” she said. “It holds secrets and we need to decipher the secrets.” Briony Horgan coinvestigator on the Perseverance rover mission and professor of planetary science at Purdue University in West Lafayette Indiana called the detection “a big win for the whole team.” Horgan was not involved the study. “This detection really confirms our hopes that sediments laid down in ancient watery environments on Mars could preserve a treasure trove of organic molecules that can tell us about everything from prebiotic processes and pathways for the origin of life to potential biosignatures from ancient organisms” Horgan said. Dr. Ben K.D. Pearce assistant professor in Purdue’s department of Earth atmospheric and planetary sciences and leader of the Laboratory for Origins and Astrobiology Research called the findings “arguably the most exciting organic detection to date on Mars.” Pearce did not participate in the research.
Tesla is bringing its electric cars to oil-rich Saudi Arabia amid falling global sales aperture finance Tesla will start selling its electric vehicles in Saudi Arabia entering the Gulf region’s largest economy as the company’s global sales are sliding and CEO Elon Musk courts controversy with his role in the US government. The carmaker announced Wednesday that it would host a launch event in the kingdom on April 10 where it will showcase its EVs. Attendees will also have the chance to “experience the future of autonomous driving with Cybercab and meet Optimus our humanoid robot as we showcase what’s next in AI and robotics” Tesla TSLA said. Tesla may struggle to gain market share in oil-rich Saudi Arabia as EVs make up a little over 1 of all car sales in the country according to a report by consultancy PwC published in September. Tesla’s entry into the new market comes as the company fights battles on several fronts. Last year it recorded the first annual decline in sales in its history as a public company posting a drop of 1. The company is facing intensifying competition in China the world’s largest auto market. On Tuesday BYD a Chinese maker of electric and hybrid cars reported 107 billion in annual sales for 2024 beating the near-98 billion notched by Tesla. And last week BYD unveiled an ultra-fast charging system which it said was capable of adding 250 miles 402 km of range in just five minutes easily outdoing Tesla’s charging technology. Tesla’s Superchargers take 15 minutes to charge an EV providing a range of 200 miles. Tesla has also suffered slumping sales in Europe. In February the carmaker sold around 40 fewer vehicles on the continent compared with the same month in 2024 according to the European Automobile Manufacturers’ Association.
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Идеи для штор в загородном доме при помощи красивых штор лучшие материалы для штор в загородных домах теплота и уют продуманный дизайн натуральные ткани для штор шторы для защиты от солнца стильные решения для штор как подобрать шторы для спальни в доме за городом шторные решения для больших окон стильные шторы из льна и холста автоматические шторы для загородного дома гармония штор и мебели декор и оформление окон в загородном доме создайте атмосферу с подходящими шторами выбор стильных штор для загородного дома плюсы и минусы разных видов штор используйте шторы для зонирования пространства шторы для зимнего уюта в загородном доме шторы в загородном доме шторы в загородном доме .
Arctic auroras ethena For getting around during winter the Inuit here nowadays prefer snowmobiles although they still keep their sled dogs. During winter they’ll offer intrepid visitors wrapped up warm against the deep-freeze temperatures dog-sledding jaunts. These can last either an hour or be part of expeditions over several days sometimes with the added experience of learning how to build an igloo. Sisimiut on the west coast and Tasilaq in the southeast are active winter centers for dog sledding. Winter’s most stellar attraction though is northern lights watching. With little urban light pollution Greenland is a dark canvas for spectacular displays and aurora borealis-watching vacations are becoming more popular. Staying outdoors Greenland is developing a reputation among adventure enthusiasts: from long-distance skiing expeditions and heliskiing on the icecap to hiking the 100-mile-long Arctic Circle Trail from Kangerslussuaq where firearms need to be carried for warning shots in case of polar bear encounters. Life is definitely changing here. The climate crisis is eating away at its icecap and Greenland may well end up as a pawn in a game of geopolitical chess. But for now the bright glare of international attention should shine a favorable light on one of the wildest travel destinations on Earth. Travel writer Mark Stratton is an Arctic specialist who has traveled to Greenland six times and counting. He’s marveled at the aurora borealis sailed to Disko Island dog-sledded with the Inuit and once got stuck in an icefloe.
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