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Anonymous

Richardcunda

06 Sep 2024 - 03:53 am

Johannes Kepler thought he sketched Mercury orbiting across the sun. What he actually captured has solved a solar mystery
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German astronomer Johannes Kepler made sketches of sunspots in 1607 from his observations of the sun’s surface — and centuries later, the pioneering drawings are helping scientists solve a solar mystery.

Even though everything in the solar system revolves around the sun, scientists have yet to unlock many of the star’s secrets.
However, studying the variability of the sun over time, including the solar cycle, could answer some of the most longstanding questions about the fiery orb and how it changes.
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Some of those questions revolve around solar activity in the 17th century, which was a pivotal time for studying the sun.

Astronomers observed sunspots with telescopes for the first time in 1610. At the same time, the sun was making an unusual transition into an extended period of weakened activity. And Kepler’s long disregarded sketches, overlooked because they were drawings rather than telescopic observations, could provide crucial historical insights.

A new study that recreates the circumstances during which Kepler made his drawings appeared on July 25 in The Astrophysical Journal Letters.

“Kepler contributed many historical benchmarks in astronomy and physics in the 17th century, leaving his legacy even in the space age,” said lead study author Hisashi Hayakawa, assistant professor at Nagoya University’s Institute for Space-Earth Environmental Research, in a statement.

“Here, we add to that by showing that Kepler’s sunspot records predate the existing telescopic sunspot records from 1610 by several years. His sunspot sketches serve as a testament to his scientific acumen and perseverance in the face of technological constraints.”

The sun’s tumultuous activity
The sun experiences an 11-year cycle of waxing and waning activity, known as the solar cycle. Currently, scientists believe that the sun is reaching or nearing solar maximum, the annual peak of its activity for the current solar cycle, called Solar Cycle 25.

Solar maximum is typically associated with an increase in the number of sunspots visible on the sun’s surface. These dark regions, some of which can reach the size of Earth or larger, are driven by the sun’s strong and constantly shifting magnetic fields.

Today, scientists track solar activity using data from ground and space-based observatories, magnetic maps of the solar surface, and ultraviolet observations of the sun’s outer atmosphere.

Anonymous

Svsabosok

06 Sep 2024 - 02:39 am

Большая часть из скважин в конце проведения восстановительного комплекса действий имеют все шансы быть снова введены в текущую эксплуатацию. Тем более что общая стоимость подобных выполненных работ в десятки раз ниже стоимости непосредственных сооружений.
Обеспечено повышение дебита водозаборной скважины не менее тридцати процентовЫ от существующего на момент старта дел.

В восьмидесятиS% случаях скважины восстанавливаются до основных данных при введении в использование скважины, что становится альтернативой бурения новой скважины.

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Brirceamuff

05 Sep 2024 - 11:32 pm

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Anonymous

Davidsoivy

05 Sep 2024 - 09:06 pm

Настройка локальных сетей в Волжском и Волгограде в день обращения

Anonymous

Dennisswind

05 Sep 2024 - 05:26 pm

Boeing’s Starliner astronauts may be in space another 6 months. Here’s what they’ll do
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When astronauts Suni Williams and Butch Wilmore left Earth for International Space Station two months ago, they ditched their bags for a key piece of equipment. Helming the inaugural crewed flight test of Boeing’s Starliner spacecraft, they departed without their own toiletries and other personal comforts — expecting to return to Earth within a week or so.
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They’ve now been on the space station more than 60 days, however, and NASA raised the possibility this week that they may remain there through early 2025 because of ongoing issues with their Starliner capsule.

Such an extension is not certain, with NASA officials hoping to resolve some disagreements within the space agency about Starliner’s safety. A decision, according to NASA, must be made by the middle of August.

But NASA indicated a monthslong continuation may be necessary if Starliner is deemed unsafe and they need to fall back on Plan B, with the astronauts coming home aboard a SpaceX Crew Dragon capsule instead.

So what exactly would Williams and Wilmore do for another six months in space?

Currently the two are guests. They’re not part of Expedition 71, the international crew of seven astronauts serving as the space station’s official staff. Nevertheless, NASA has said they’ve seamlessly integrated with the group, picking up everyday tasks aboard the orbiting laboratory.

But if their stay is extended through February, as NASA said may happen if Starliner can’t bring them home, Williams and Wilmore would transition to be full-time expedition crew members.

Anonymous

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05 Sep 2024 - 01:01 pm

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Anonymous

Jasonrat

05 Sep 2024 - 12:09 pm

This city is developing the world’s tallest timber tower, again
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The US city of Milwaukee is already home to the world’s tallest timber tower. But another, even taller, wooden skyscraper could be added to its skyline, designed by Vancouver-based studio Michael Green Architects (MGA).

The firm recently released plans for the development, which includes a 55-story tower made principally from mass timber — thick, compressed, multilayered panels of solid wood. If built, it would usurp the current world title holder, the 25-story Ascent tower by Korb + Associates Architects, as well as becoming the tallest building in the state of Wisconsin.

MGA, which specializes in wooden architecture, hopes that the project will set a “new global benchmark for mass timber construction.”

The project is part of the redevelopment of the Marcus Performing Arts Center, which opened in 1969 and won the Honor Award for Excellence in Architectural Design from the American Institute of Architects in 1970. Led by Neutral, which bills itself as a “regenerative development company,” the redesign will transform what is currently the center’s concrete parking lot into a space with residential units, offices, restaurants, cafes, grocery stores and public plazas. According to MGA, construction will cost an estimated $700 million. The plan is currently going through the city’s approval process, during which it is expected to evolve.

Why timber?
While the use of mass timber is steadily increasing worldwide, thanks to changes in building regulations and shifting attitudes towards the material, it has yet to match the sheer height of buildings made of concrete and steel — although a slew of timber high-rises have been proposed in recent years. MGA says its tower design would be approximately 600 feet (182 meters) tall — more than double the 284 feet (87 meter) tall Ascent tower.

“The race for height is important,” said Michael Green, an architect and founder of MGA. “It’s not about showing off, it’s about showing what’s possible to the public.”

He argued that the reason timber skyscrapers haven’t yet become mainstream is because climate change hasn’t been at the center of the conversation. “We didn’t really need to challenge the status quo of steel and concrete,” he said. “But because those materials are so hard on the climate, we had to find a different way to build towers and big buildings in general.”

Anonymous

Jasonrat

05 Sep 2024 - 08:43 am

This city is developing the world’s tallest timber tower, again
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The US city of Milwaukee is already home to the world’s tallest timber tower. But another, even taller, wooden skyscraper could be added to its skyline, designed by Vancouver-based studio Michael Green Architects (MGA).

The firm recently released plans for the development, which includes a 55-story tower made principally from mass timber — thick, compressed, multilayered panels of solid wood. If built, it would usurp the current world title holder, the 25-story Ascent tower by Korb + Associates Architects, as well as becoming the tallest building in the state of Wisconsin.

MGA, which specializes in wooden architecture, hopes that the project will set a “new global benchmark for mass timber construction.”

The project is part of the redevelopment of the Marcus Performing Arts Center, which opened in 1969 and won the Honor Award for Excellence in Architectural Design from the American Institute of Architects in 1970. Led by Neutral, which bills itself as a “regenerative development company,” the redesign will transform what is currently the center’s concrete parking lot into a space with residential units, offices, restaurants, cafes, grocery stores and public plazas. According to MGA, construction will cost an estimated $700 million. The plan is currently going through the city’s approval process, during which it is expected to evolve.

Why timber?
While the use of mass timber is steadily increasing worldwide, thanks to changes in building regulations and shifting attitudes towards the material, it has yet to match the sheer height of buildings made of concrete and steel — although a slew of timber high-rises have been proposed in recent years. MGA says its tower design would be approximately 600 feet (182 meters) tall — more than double the 284 feet (87 meter) tall Ascent tower.

“The race for height is important,” said Michael Green, an architect and founder of MGA. “It’s not about showing off, it’s about showing what’s possible to the public.”

He argued that the reason timber skyscrapers haven’t yet become mainstream is because climate change hasn’t been at the center of the conversation. “We didn’t really need to challenge the status quo of steel and concrete,” he said. “But because those materials are so hard on the climate, we had to find a different way to build towers and big buildings in general.”

Anonymous

Edwardfen

05 Sep 2024 - 08:04 am

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