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World’s largest solar telescope produces never-before-seen image of our star

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The Daniel K. Inouye Solar Telescope (DKIST), the world’s largest solar telescope, captured its first image of the sun — the highest-resolution image of our star to date — last month.

The image begins what scientists hope will be a nearly 50-year study of the Earth’s most important star. The new images reveal small magnetic structures in incredible detail. As construction on the 4-meter telescope winds down on the peak of Haleakala on the Hawaiian island of Maui, more of the telescope’s instruments will begin to come online, increasing its ability to shed light on the active sun.

Inouye’s unique resolution and sensitivity will allow it to probe the sun’s magnetic field for the very first time as it studies the activities that drive space weather in Earth’s neighborhood. Charged particles shed from the sun can interfere with Earth’s mechanical satellites, power grids and communication infrastructure. The new telescope will also delve into one of the most counterintuitive solar mysteries: why the sun’s corona, or outer layer, is hotter than its visible surface.

“These are the highest-resolution images and movies of the solar surface ever taken,” Inouye director Thomas Rimmele said during a news conference on Friday (Jan. 24). “Up to now, we’ve just seen the tip of the iceberg.”

“A Swiss Army Knife”

Construction began on the Inouye Solar Telescope in 2012. Since then, the telescope has remained on budget and on schedule, according to Dave Boboltz, the program director for the National Science Foundation Astronomy Division.

The telescope captured the newly released image, which is its first engineering image, on Dec. 10, 2019, but the observatory is not yet complete. Only a single instrument, the Visible Broadband Imager (VBI), was operational at that time. The VBI takes extremely high-resolution images of the solar surface and lower atmosphere.

The observatory’s second instrument, the Visible Spectro-polarimeter (VISP), began operation on Thursday (Jan. 23). Like a prism, VISP splits light into its component colors to provide precise measurements of its characteristics along multiple wavelengths. The remaining instruments will be turned on as construction continues on the 13-story building, with full operations planned to begin in July 2020.

“We’re now in the final sprint of a very long marathon,” Rimmele said.

The first light-images captured are a false color image of the sun. Because the building is still under construction, the images were only processed but not analyzed for scientific results. However, Rimmele said that the magnetic structures that previously appeared in solar images as single bright points are now visible as several smaller structures, providing a hint the new solar telescope’s capabilities.

The next instrument that will be delivered to the summit will be the Cryogenic Near Infrared Spectra-Polarimeter, which will study the solar atmosphere at infrared wavelengths, in order to probe magnetic fields in the sun’s corona over a large field of view. Soon after, the Diffraction Limited Near Infrared Spectrom-Polarimeter will arrive, eventually using optical fibers to collect spectral data at every point in a two-dimensional solar image, allowing it to simultaneously measure spatial and spectral information. The final instrument, the Visible Tunable Filter, will capture very high-resolution images of the sun while performing high speed scans of the light that can identify atoms and molecules.

Inouye is meant to operate for 44 years, which should cover two of the sun’s full 22-year solar cycles. Its suite of instruments will likely change over time.

“The real power in the Inouye Solar Telescope is its flexibility, its upgradability,” Boboltz said. “It’s like having a Swiss Army Knife to study the sun.”

Solar solver

The sun constantly sheds material into space in all directions. This ongoing solar wind interacts with the Earth’s magnetic field, causing the auroras.

Other outbursts are more dramatic. Occasionally, the sun will spit out large chunks of plasma and particles known as coronal mass ejections (CMEs); if these reach Earth, they can affect satellites and power grids, with the most powerful causing blackouts. One of the best-known modern catastrophes occurred in 1989 when a geomagnetic storm hit Quebec, sparking a nine-hour blackout across the Canadian territory. Studies have set the cost of a widespread blackout from tens of billions to trillions of dollars, depending on the circumstances.

Such effects could become more severe. “Our expanding dependence on technology greatly increases our vulnerability to space weather,” Boboltz said.

The effects can be small but devastating. In September 2017, as a trio of hurricanes advanced across the Caribbean, solar flares caused multiple radio blackouts on the sunlit side of Earth. Multiple radio blackouts halted communications during the dangerous time, sometimes for as long as 8 hours.

“A naturally occurring event on Earth and a naturally event on the sun, when combined, represent a much bigger threat to our society,” National Science Foundation Director Valentin Pillet said during the news conference.

The Inouye telescope should allow astronomers to learn more about what drives space weather. This understanding may help speed predictions for the most extreme events, allowing a faster response during dangerous situations.

Inouye will not act alone to accomplish this. “To really understand the drivers and the impact of space weather, we need to use two complementary approaches,” Pillet said. Inouye will handle the first, making in-depth observations of the magnetic surface of the sun.

The second approach requires sending spacecraft close to the sun.

NASA’s Parker Solar Probe launched in 2018 and will get within 4 million miles (6 million kilometers) at its closest approach to the star. In February, NASA and the European Space Agency will launch the Solar Orbiter, a mission dedicated to studying the sun’s heliosphere, the bubble of charged particles blown into space by the solar wind.

The trio are “very complementary in different ways,” Pillet said. While Inouye will provide a detailed look at the sun’s magnetic field, the space missions will place its observations in context with solar activity and solar weather.

Together, “they will be at the forefront of discovery for the next half century,” Pillet said. “It really is a great time to be a solar astronomer,” he said.

“House of the sun”

Haleakala, Hawaiian for “House of the Sun,” seems like the ideal setting for a solar telescope. World famous for its spectacular sunrises, the dormant volcano receives about 15 minutes more daylight than the sea-level portion of the island of Maui.

According to Hawaiian tradition, the volcano took its name from a trick played on the sun by the demi-god Maui. Maui’s mother complained that the sun sped across the sky so fast that her cloth could not dry. The trickster climbed to the top of the mountain and lassoed the sun, refusing to release it until the sun agreed to slow down. To secure his release, the sun agreed to travel more slowly for six months of the year.

The spiritual significance of Hawaiian peaks has wreaked havoc for other telescopes. Protests about the growing astronomical presence on Mauna Kea have halted construction of the Thirty Meter Telescope. Inouye didn’t escape opposition. In 2015 and 2017, hundreds of protesters gathered to block construction vehicles from traveling to the top of the peak.

Since then, the telescope’s officials have met twice a year with a working group of native Hawaiians, whom they intend to bring to see the finished telescope. A new Science Support Center was also built at the base of the mountain to provide off-site support, and the peak remains open to native Hawaiians who wish to practice their religion on its slopes.

The National Solar Observatory has also put together a set of lesson plans for middle school teachers that highlight Hawaii’s long history of astronomy that was presented to local teachers in 2019.

“We’ve been able to smooth over a lot of that contention,” Boboltz said.

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Here’s how Helene and other storms dumped a whopping 40 trillion gallons of rain on the South

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More than 40 trillion gallons of rain drenched the Southeast United States in the last week from Hurricane Helene and a run-of-the-mill rainstorm that sloshed in ahead of it — an unheard of amount of water that has stunned experts.

That’s enough to fill the Dallas Cowboys’ stadium 51,000 times, or Lake Tahoe just once. If it was concentrated just on the state of North Carolina that much water would be 3.5 feet deep (more than 1 meter). It’s enough to fill more than 60 million Olympic-size swimming pools.

“That’s an astronomical amount of precipitation,” said Ed Clark, head of the National Oceanic and Atmospheric Administration’s National Water Center in Tuscaloosa, Alabama. “I have not seen something in my 25 years of working at the weather service that is this geographically large of an extent and the sheer volume of water that fell from the sky.”

The flood damage from the rain is apocalyptic, meteorologists said. More than 100 people are dead, according to officials.

Private meteorologist Ryan Maue, a former NOAA chief scientist, calculated the amount of rain, using precipitation measurements made in 2.5-mile-by-2.5 mile grids as measured by satellites and ground observations. He came up with 40 trillion gallons through Sunday for the eastern United States, with 20 trillion gallons of that hitting just Georgia, Tennessee, the Carolinas and Florida from Hurricane Helene.

Clark did the calculations independently and said the 40 trillion gallon figure (151 trillion liters) is about right and, if anything, conservative. Maue said maybe 1 to 2 trillion more gallons of rain had fallen, much if it in Virginia, since his calculations.

Clark, who spends much of his work on issues of shrinking western water supplies, said to put the amount of rain in perspective, it’s more than twice the combined amount of water stored by two key Colorado River basin reservoirs: Lake Powell and Lake Mead.

Several meteorologists said this was a combination of two, maybe three storm systems. Before Helene struck, rain had fallen heavily for days because a low pressure system had “cut off” from the jet stream — which moves weather systems along west to east — and stalled over the Southeast. That funneled plenty of warm water from the Gulf of Mexico. And a storm that fell just short of named status parked along North Carolina’s Atlantic coast, dumping as much as 20 inches of rain, said North Carolina state climatologist Kathie Dello.

Then add Helene, one of the largest storms in the last couple decades and one that held plenty of rain because it was young and moved fast before it hit the Appalachians, said University of Albany hurricane expert Kristen Corbosiero.

“It was not just a perfect storm, but it was a combination of multiple storms that that led to the enormous amount of rain,” Maue said. “That collected at high elevation, we’re talking 3,000 to 6000 feet. And when you drop trillions of gallons on a mountain, that has to go down.”

The fact that these storms hit the mountains made everything worse, and not just because of runoff. The interaction between the mountains and the storm systems wrings more moisture out of the air, Clark, Maue and Corbosiero said.

North Carolina weather officials said their top measurement total was 31.33 inches in the tiny town of Busick. Mount Mitchell also got more than 2 feet of rainfall.

Before 2017’s Hurricane Harvey, “I said to our colleagues, you know, I never thought in my career that we would measure rainfall in feet,” Clark said. “And after Harvey, Florence, the more isolated events in eastern Kentucky, portions of South Dakota. We’re seeing events year in and year out where we are measuring rainfall in feet.”

Storms are getting wetter as the climate change s, said Corbosiero and Dello. A basic law of physics says the air holds nearly 4% more moisture for every degree Fahrenheit warmer (7% for every degree Celsius) and the world has warmed more than 2 degrees (1.2 degrees Celsius) since pre-industrial times.

Corbosiero said meteorologists are vigorously debating how much of Helene is due to worsening climate change and how much is random.

For Dello, the “fingerprints of climate change” were clear.

“We’ve seen tropical storm impacts in western North Carolina. But these storms are wetter and these storms are warmer. And there would have been a time when a tropical storm would have been heading toward North Carolina and would have caused some rain and some damage, but not apocalyptic destruction. ”

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Follow AP’s climate coverage at https://apnews.com/hub/climate

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Follow Seth Borenstein on Twitter at @borenbears

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Associated Press climate and environmental coverage receives support from several private foundations. See more about AP’s climate initiative here. The AP is solely responsible for all content.

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‘Big Sam’: Paleontologists unearth giant skull of Pachyrhinosaurus in Alberta

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It’s a dinosaur that roamed Alberta’s badlands more than 70 million years ago, sporting a big, bumpy, bony head the size of a baby elephant.

On Wednesday, paleontologists near Grande Prairie pulled its 272-kilogram skull from the ground.

They call it “Big Sam.”

The adult Pachyrhinosaurus is the second plant-eating dinosaur to be unearthed from a dense bonebed belonging to a herd that died together on the edge of a valley that now sits 450 kilometres northwest of Edmonton.

It didn’t die alone.

“We have hundreds of juvenile bones in the bonebed, so we know that there are many babies and some adults among all of the big adults,” Emily Bamforth, a paleontologist with the nearby Philip J. Currie Dinosaur Museum, said in an interview on the way to the dig site.

She described the horned Pachyrhinosaurus as “the smaller, older cousin of the triceratops.”

“This species of dinosaur is endemic to the Grand Prairie area, so it’s found here and nowhere else in the world. They are … kind of about the size of an Indian elephant and a rhino,” she added.

The head alone, she said, is about the size of a baby elephant.

The discovery was a long time coming.

The bonebed was first discovered by a high school teacher out for a walk about 50 years ago. It took the teacher a decade to get anyone from southern Alberta to come to take a look.

“At the time, sort of in the ’70s and ’80s, paleontology in northern Alberta was virtually unknown,” said Bamforth.

When paleontogists eventually got to the site, Bamforth said, they learned “it’s actually one of the densest dinosaur bonebeds in North America.”

“It contains about 100 to 300 bones per square metre,” she said.

Paleontologists have been at the site sporadically ever since, combing through bones belonging to turtles, dinosaurs and lizards. Sixteen years ago, they discovered a large skull of an approximately 30-year-old Pachyrhinosaurus, which is now at the museum.

About a year ago, they found the second adult: Big Sam.

Bamforth said both dinosaurs are believed to have been the elders in the herd.

“Their distinguishing feature is that, instead of having a horn on their nose like a triceratops, they had this big, bony bump called a boss. And they have big, bony bumps over their eyes as well,” she said.

“It makes them look a little strange. It’s the one dinosaur that if you find it, it’s the only possible thing it can be.”

The genders of the two adults are unknown.

Bamforth said the extraction was difficult because Big Sam was intertwined in a cluster of about 300 other bones.

The skull was found upside down, “as if the animal was lying on its back,” but was well preserved, she said.

She said the excavation process involved putting plaster on the skull and wooden planks around if for stability. From there, it was lifted out — very carefully — with a crane, and was to be shipped on a trolley to the museum for study.

“I have extracted skulls in the past. This is probably the biggest one I’ve ever done though,” said Bamforth.

“It’s pretty exciting.”

This report by The Canadian Press was first published Sept. 25, 2024.

The Canadian Press. All rights reserved.

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The ancient jar smashed by a 4-year-old is back on display at an Israeli museum after repair

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TEL AVIV, Israel (AP) — A rare Bronze-Era jar accidentally smashed by a 4-year-old visiting a museum was back on display Wednesday after restoration experts were able to carefully piece the artifact back together.

Last month, a family from northern Israel was visiting the museum when their youngest son tipped over the jar, which smashed into pieces.

Alex Geller, the boy’s father, said his son — the youngest of three — is exceptionally curious, and that the moment he heard the crash, “please let that not be my child” was the first thought that raced through his head.

The jar has been on display at the Hecht Museum in Haifa for 35 years. It was one of the only containers of its size and from that period still complete when it was discovered.

The Bronze Age jar is one of many artifacts exhibited out in the open, part of the Hecht Museum’s vision of letting visitors explore history without glass barriers, said Inbal Rivlin, the director of the museum, which is associated with Haifa University in northern Israel.

It was likely used to hold wine or oil, and dates back to between 2200 and 1500 B.C.

Rivlin and the museum decided to turn the moment, which captured international attention, into a teaching moment, inviting the Geller family back for a special visit and hands-on activity to illustrate the restoration process.

Rivlin added that the incident provided a welcome distraction from the ongoing war in Gaza. “Well, he’s just a kid. So I think that somehow it touches the heart of the people in Israel and around the world,“ said Rivlin.

Roee Shafir, a restoration expert at the museum, said the repairs would be fairly simple, as the pieces were from a single, complete jar. Archaeologists often face the more daunting task of sifting through piles of shards from multiple objects and trying to piece them together.

Experts used 3D technology, hi-resolution videos, and special glue to painstakingly reconstruct the large jar.

Less than two weeks after it broke, the jar went back on display at the museum. The gluing process left small hairline cracks, and a few pieces are missing, but the jar’s impressive size remains.

The only noticeable difference in the exhibit was a new sign reading “please don’t touch.”

The Canadian Press. All rights reserved.

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