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NOTÍCIAS E EVENTOS

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And hopefully now, thanks to a group of citizen scientists, so will the name Steve. AGU Advances. You’re in fact gazing up at one of the world’s greatest astronomical wonders which few have actually seen. Aurora-chasing citizen scientists help discover a new feature of STEVE Date: November 13, 2020 Source: NASA/Goddard Space Flight Center Summary: A … STEVE (Strong Thermal Emission Velocity Enhancement) is an atmospheric optical phenomenon that appears as a purple and green light ribbon in the sky, named in late 2016 by aurora watchers from Alberta, Canada. That fence looks similar enough to the shimmering green curtains seen in the aurora borealis that scientists thought at least this part of STEVE could be a type of aurora. For now, this is just a theory for what might be occurring. A new finding about the formation of streaks within the aurora-like STEVE phenomenon brings scientists one step closer to solving the mystery. However, when it comes to the more recent question from our travellers of how to spot STEVE, we’re still playing catch up with sourcing the right answers. Grandagarður 2 Amateur photographers capture yet another bizarre facet of the weird, aurora-like phenomenon called STEVE. So, as you set up your camera and settle in for a night gazing at the stars during our winter months in Iceland, take a moment to check both north and south, try various test shots in both directions and see if you can capture both these incredible wonders of the northern skies. ... December 2020 (1) November 2020 (2) October 2020 (1) September 2020 (1) August 2020 (5) July 2020 (8) June 2020 (30) May 2020 (2) All rights reserved. J. Semeter et al. The structure of these horizontal streaks cannot be formed by the electron showers responsible for auroras, researchers report in the December AGU Advances. In simplicity, STEVE is an atmospheric optical phenomenon that appears as a purple, pink, mauve and green light ribbon in the sky, similar in aspect to the aurora. Much like the aurora, the colours you will see with naked eye seem to vary based on levels of intensity, but a long exposure on your camera should pick up mauves, purples and greens similarly to the aurora. ... Getting Help from Steve and the Stedman Solutions Team. Whatever is going on with STEVE’s horizontal green features, “there’s some tantalizing evidence” that they’re related to the vertical picket fence, Semeter says. While these observations do hint that the fence may arise from STEVE-specific particle interactions, it’s hard to be sure based only on photographs from the ground, says Toshi Nishimura, a space physicist at Boston University who was not involved in the work. We are sad to announce that on October 30, 2020 we had to say goodbye to Steve Wishart of Aurora, Nebraska, born in Superior, Nebraska. Here is Steve Wishart’s obituary. 101 Reykjavík​ Fast-forward to 2020, and scientists are now questioning the results of this research. Sorry, your blog cannot share posts by e-mail. J. Semeter et al / AGU Advances 2020 Recently, studies of the picket fence’s color have cast doubt on its origins. “We found events where these little feet appear before or at the same time as the green column above it.” And some horizontal and vertical streaks looked connected. “It’s really weird, and nobody really knows what’s going on just yet,” says Joshua Semeter, an engineer at Boston University. Computer simulations of plasma flowing through the atmosphere could test whether the idea is correct. There’s no doubt that watching the Northern Lights is one of the best things to see and do in Iceland. In 2018, a new aurora-like discovery struck the world. Essentially, STEVE is a phenomenon caused by a combination of particle friction and waves causing energetic electrons to move from the magnetosphere to the ionosphere… no wonder it has taken this long for an answer! Published in Aurora Beacon News on Apr. Aurora photographers have been capturing pictures of STEVE for decades without actually understanding what it was. In fact, there is evidence that STEVE has been observed and spotted since the 18th century in 1705. 2.000,- ISK She has bachelor's degrees in physics and English, and a master's in science writing. In English, you’ll want to look directly up if you’re at an altitude 5-10 degrees below the auroral oval when it’s dark and you have clear skies, or slightly south if you’re like us and live in more northerly latitudes like Iceland. Steve is awesome, heavenly and mysterious. 05/09/2020 . Whereas, the green ‘picket fence’ aspect of STEVE develops from a completely different reaction. In this blog, I’ll explain what STEVE is, our present day understandings of the phenomenon and how you can increase your chances of spotting it. Adults ............................ 2000 ISK, Adult…………………………. Courtesy of Donna Lach The sky glow nicknamed STEVE is a purple arc of light often accompanied by a vertical row of green stripes. Specifically, STEVE mainly occurs around 5-10 degrees further south in the Northern Hemisphere than the Auroral Oval. Relatively new research indicates that the formation of STEVE occurs in two distinct parts – the mauve, pink and purple streaks and the green ‘picket fence’ aspect which is similar to an aurora. A combination of data and photography footage helped formulate the consensus that energetic electrons were pouring into the Earth’s ionosphere, the layer of our planet’s atmosphere where atoms lose their electrons due to solar and cosmic radiation. Questions or comments on this article? Wikimedia. But this pink-ish ribbon isn't an aurora — it's STEVE! These green blobs might arise from turbulence in the torrent of plasma that creates STEVE’s purple band, Semeter says. A new finding about the formation of streaks within the aurora-like STEVE phenomenon brings scientists one step closer to solving the mystery. These are the best places to see the northern lights in 2020. Ray said that, "Steve's Club has taught me to be proud of my body for more than what it looks like. When it comes to spotting STEVE, based on our observations and data this usually occurs in a southward direction when you’re in Iceland due to the location of this phenomenon at 5-10 degrees lower in latitude. Subscribers, enter your e-mail address to access the Science News archives. While STEVE’s green picket fence also contains glowing oxygen, a dearth of nitrogen emission hints that the fence is not the same kind of light show as an aurora. Today, our mission remains the same: to empower people to evaluate the news and the world around them. Headlines and summaries of the latest Science News articles, delivered to your inbox. WATCH ABOVE: (Feb. 6, 2020) Aurora Cannabis revealed on Thursday that its CEO is stepping aside and hundreds of jobs are being eliminated as the cannabis firm goes through a restructuring process. Aurora Steve. STEVE is More Complicated Than We Thought. MEMORIAL EVENTS. Now named STEVE, or Strong Thermal Emission Velocity Enhancement, this phenomenon is still new to scientists, who are working to understand all its details. APR. July 16, 2020 at 8:21 pm Filed Under: Aurora News , Campaign 2020 , Colorado News , Jason Crow , Steve House (CBS4) — Republicans are hoping to take back Colorado’s Congressional District 6. Here in Iceland, we’re blessed by both our position within the auroral zone and our relatively mild climate, to be considered the optimal location to watch the great celestial dances of the Northern Lights. If so, that could explain why STEVE’s picket fence doesn’t have quite the same color as typical auroras. Those electrons make nitrogen in the air glow blue and oxygen glow green. First, the mauve and pink streaks most synonymous with STEVE occur when charged particles are heated up in the atmosphere, further south than a typical aurora. But STEVE’s purple arc is often accompanied by a “picket fence” of vertical green stripes. STEVE is a relatively newly assessed and understood phenomenon. No somos DJ en ningún momento estamos intentando reemplazar a los DJs. The mysterious, aurora-like phenomenon called STEVE just got a little weirder. According to NASA, STEVE actually occurs much closer to the equator than the aurora which only occurs around the Earth’s poles. Specifically, new research has shown that the green picket fence is not an aurora after all. Future satellite observations could confirm whether electrons from the magnetosphere are pouring into the atmosphere in the region of a STEVE picket fence, he says. They may have been dazzled by STEVE as well. Unlike the aurora, however, STEVE isn’t a dancer! You can send your sympathy in the guestbook provided and share it with the family. Post was not sent - check your e-mail addresses! The analysis suggested that the streaks in these images were not actually lines extended across the sky, but only appeared that way due to motion blur, as spherical blobs of glowing gas moved through the atmosphere. Semeter and colleagues examined horizontal streaks below picket fences in high-resolution images of STEVE taken by citizen scientists. But, with new observations in our skies above, STEVE now adds a new element and anticipation to the upcoming winter hunts. According to NASA, STEVE actually occurs much closer to the equator than the aurora which only occurs around the Earth’s poles. The short answer here is in the ionosphere. It was officially discovered in Alberta, Canada by our North American aurora watching friends in the Facebook group, ‘Alberta Aurora Chasers’, who named the phenomenon. Much like the aurora, this green element of STEVE, simultaneously happens in the Northern and Southern hemispheres as a result of the same interactions. This reaction causes friction which then heats up the particles, resulting in the mauve and pinkish glow (incandescent lightbulbs work in a similar way) that causes the main obvious streaks of the STEVE phenomenon. Only in the past few years have scientists found an explanation for this strange celestial phenomenon. It occurs as waves move from Earth’s magnetosphere to the ionosphere. 1, December 2020. doi: 10.1029/2020AV000183. This region is where the waves can both energise electrons and move them out of the magnetosphere, which create this similar aurora style appearance. Published in Aurora Beacon News on Apr. From 2015 to 2016, citizen scientists reported 30 instances of a purple ribbon in the sky, with a green picket fence structure underneath. Auroras form when electrons from the magnetic bubble, or magnetosphere, surrounding Earth cascade into the atmosphere (SN: 2/7/20). Where aurora activity occurs anywhere between 50 – 640 km in altitude, STEVE sits at 450 km. Particularly, with the Northern Lights, science has propelled our understanding of probabilities, causation and the technical interactions behind the solar wind and our atmosphere that have led to eons of wonder from humankind. Science News was founded in 1921 as an independent, nonprofit source of accurate information on the latest news of science, medicine and technology. Stabbing Suspect Steve Sinclair, Who Yelled ‘Black Lives Matter,’ Charged With Hate Crime August 27, 2020 at 8:46 pm Filed Under: Aurora News , Aurora Police , Steve Sinclair Tel: +354 780-4500 Visitation. As is the case with astronomy, there are constantly new discoveries and observations that lead to new and exciting theories and hypotheses. A newfound type of aurora dubbed the “dunes” joins the ranks of black auroras, STEVE and other obscure auroral phenomena. To retain the name on scientific grounds, STEVE now stands for ‘Strong Thermal Emission Velocity Enhancement’ which doesn’t quite roll off the tongue, hence the accepted abbreviation. There’s no doubt that for some time due to our knowledge of aurora science and our regular sightings experience that we know the best places to see the Northern Lights in Iceland. According to analysis of satellite data from the European Space Agency's Swarm mission, STEVE is caused by a 25 km (16 mi) wide ribbon of hot plasmaat an altitude of 450 km (280 mi), with a temperature of 3,000 °C (3,270 K; 5,430 °F) and flowing at a speed of 6 km/s (3.7 mi/s) (compared to 10 … Whether it’s on a Northern Lights tour, a winter package or an Iceland self-drive adventure on your own, you’re sure to spot a cosmic light show unique to that specific evening that none will have seen before, nor see again. Source: STEVE Atmospheric Phenomenon. But the new observations suggest these horizontal streaks — and perhaps the similarly colored fence — arise from some STEVE-specific process. In 2018, a new aurora-like discovery struck the world. With the new discovery of STEVE, we now finally have a reason to look south and enjoy evenings of photographing, discovering and learning more about the wonders of the night sky above. Getty. As opposed to a red, green, or yellow aurora with a wispy, curtain-like shape , STEVE appears as a ribbon across the sky in a mauve or purplish color. Iceland Now, researchers and citizen scientists have identified an even more unusual aspect of STEVE’s picket fence: small green streaks that stick out like feet from the bottom of some of its vertical stripes. Maria Temming is the staff reporter for physical sciences, covering everything from chemistry to computer science and cosmology. The mysterious green streaks below STEVE. The data found that STEVE is actually caused by a 25 km wide ribbon of hot plasma at an altitude of 450 km, at an average temperature of 3000 °C, and a flowing speed of 6 km/s. Send us a message! So, for night sky lovers, this should be one at the top of your list to spot and photograph in the coming winter seasons. Shortly after this, it was then investigated by analysis from the satellite data of the European Space Agency’s Swarm mission. As a result, those high-energy electrons may get tangled up in small vortices on the edge of the plasma stream, below the purple streak. From 2015 to 2016, citizen scientists reported 30 instances of a purple ribbon in the sky, with a green picket fence structure underneath. STEVE is a very narrow arc, aligned east-west, and extends for hundreds and thousands of miles. Steve Dalkowski was one of the fastest pitchers in organized baseball history with a fastball thought to be over 100 miles per hours. Now named STEVE, or Strong Thermal Emission Velocity Enhancement, this phenomenon is still new to scientists, who are working to understand all its details. There’s a reason people have gazed up in awe at the heavens on a winter’s eve in locations in the far north for generations, you never truly know what you’re going to see! You’re not going to get big intense all-sky encompassing auroral type displays with STEVE, but instead a more subtler band of glowing light. Positively charged atoms in the plasma may rush through the atmosphere largely unimpeded, forming a smooth purple arc. Written By: Bob King for the Duluth News Tribune | Dec 1st 2020 - 6pm. A meteor streaks overhead as a Strong Thermal Emission Velocity Enhancement (STEVE) dances near the aurora and Comet Neowise hangs over Manitoba, Canada, July 14, 2020. STEVE, short for Strong Thermal Emission Velocity Enhancement, is a sky glow that appears south of the northern lights (SN: 3/15/18). ... 2020. Somewhat bizarrely, this phenomenon is, in fact, much less rare than you would think, though it was never investigated before initial discovery in 2016. This is not to say it’s any less special than the Northern Lights. Steve's Club National Program . Where aurora activity occurs anywhere between 50 – 640 km in altitude, STEVE sits at 450 km. If you don't know STEVE (short for Strong Thermal Emission Velocity Enhancement) by … Specifically, STEVE mainly occurs around 5-10 degrees further south in the Northern Hemisphere than the Auroral Oval. Meet Ray! It’s part of the joy of spending time under the night sky in winter in Iceland that we frequently discover and ponder over new phenomena, and share these discoveries with the world. For those of you who have seen a relatively weak Northern Lights display, which often can only appear as a thin pale band across the sky, STEVE is much closer to this. Aurora-watchers gazing at spectacular displays over the Labor Day weekend may have been seeing more than the northern lights. From 2015 to 2016, citizen scientists reported 30 instances of a purple ribbon in the sky, with a green picket fence structure underneath. Steve Wishart Obituary. Student, senior………….1.800,- ISK Nov 17, 2020 at 4:59 PM The first day of filing drew 11 candidates for Aurora city offices in the April 2021 election. 1719 N Street, N.W., Washington, D.C. 20036, Dog ticks may get more of a taste for human blood as the climate changes, Mineral body armor helps some leaf-cutting ants win fights with bigger kin, A face mask may turn up a male wrinkle-faced bat’s sex appeal, The U.K. is the first country to authorize a fully tested COVID-19 vaccine, Health care workers and long-term care residents should get COVID-19 vaccines first, Long-lasting shots work better than daily pills to prevent HIV in at-risk women, Plastics are showing up in the world’s most remote places, including Mount Everest, 50 years ago, scientists named Earth’s magnetic field as a suspect in extinctions, December’s stunning Geminid meteor shower is born from a humble asteroid, China is about to collect the first moon rocks since the 1970s, Astronomers spotted colliding neutron stars that may have formed a magnetar, Newton’s groundbreaking Principia may have been more popular than previously thought, Supercooled water has been caught morphing between two forms, Giant lasers help re-create supernovas’ explosive, mysterious physics, sky glow that appears south of the northern lights, electrons from the magnetic bubble, or magnetosphere, surrounding Earth cascade into the atmosphere, cannot be formed by the electron showers responsible for auroras, Here’s what causes the aurora-like glow known as STEVE, Here are 5 of the weirdest auroras, including the newly spotted ‘dunes’, Rosetta data reveal an invisible ultraviolet aurora around comet 67P, Technology and natural hazards clash to create ‘natech’ disasters, 50 years ago, scientists suspected microbes flourished in clouds, Once hurricanes make landfall, they’re lingering longer and staying stronger, With Theta, 2020 sets the record for most named Atlantic storms, How frigid lizards falling from trees revealed the reptiles’ growing cold tolerance. 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