Libro de Visitas

Elizabethendam

17 Aug 2024 - 10:35 pm

Браво, замечательная фраза и своевременно
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Richardmes

17 Aug 2024 - 10:19 pm

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.

Lodseevy

17 Aug 2024 - 09:43 pm

Onion sites wiki Tor


Exploring the Depths of the Internet: A Guide to Tor Dark Wiki and Onion URLs
Are you tired of browsing the same old sites on the internet? Looking for something different, edgier, and dare I say, a little more mysterious? Well, have no fear my fellow curious cats, because the Dark Web is here and it's calling your name!

But first, let me introduce you to the wiki side of the Dark Web: Tor Wiki Links. Here you can find all sorts of directories, lists, and fresh onion urls for all your deep web needs. And yes, I said onion urls. No, this has nothing to do with actual onions, but rather the unique .onion url code used exclusively for the Tor network.

So, what is the Tor network, you ask? Simply put, it's a network of servers that allows users to browse the internet anonymously, without revealing their IP addresses or locations. This is done by routing your internet traffic through multiple servers, making it almost impossible for anyone to track your online activity.

But back to the Tor Wiki. Here you can find everything from Tor links to hidden wikis, Tor sites, and of course, the infamous Dark Wiki. Want to buy some illegal drugs? There's a Tor link for that. Interested in hiring a hitman? Yep, there's a Tor link for that too (although we highly advise against it). Heck, you can even find Tor link directories specifically for whistleblowers and journalists looking to share sensitive information.

Tor's Best Kept Secrets: Onion URLs You Need to Know



http://darknet2020.com

Josephaporo

17 Aug 2024 - 05:48 pm

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Waynebeefs

17 Aug 2024 - 04:10 pm

Professional Pizzeria Remodel Companies: Expert Renovations for Quality Upgrades

Frozen Yogurt Building And Construction Business
Partner with our frozen yogurt building and construction firm for expert construction solutions. We build practical and appealing stores that improve customer experience.

Patriciajes

17 Aug 2024 - 03:43 pm

Согласен, весьма полезная мысль
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Anthonyelero

17 Aug 2024 - 03:39 pm

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Josephton

17 Aug 2024 - 01:37 pm

Готовы к революции в онлайн-шопинге? Обратите внимание на платформу мега даркнет ссылки! Благодаря новаторскому подходу и широкому выбору товаров, mega dark market обеспечивает беспрепятственный шопинг. Пройдите простую регистрацию и ознакомьтесь с разнообразными категориями. Присоединяйтесь к mega зеркало прямо сейчас и почувствуйте будущее онлайн-шопинга.

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Anthonyanype

17 Aug 2024 - 01:14 pm

что такое альфа в физике
http://www.webpilyla.ru
какие цели предусматривал план барбаросса кратко
fokusblog.ru
https://mirtetriks.ru
где находится запас питательных веществ у пшеницы
webpilyla.ru
http://www.frutilupik.ru
какие минеральные ресурсы относятся к группе металлических
fokusblog.ru
http://www.openkrokzo.ru
направление на какую сторону света указывает полярная звезда

Anthonyanype

17 Aug 2024 - 01:01 pm

сколько стран в восточной африке
http://lukiblog.ru
какой талант был у левши
snotolkovatelnyi.ru
http://snotolkovatelnyi.ru
укажите какие из нижеприведенных наук относятся к естественным
algoblogus.ru
http://openkrokzo.ru
направо это какая часть речи
fokusblog.ru
https://toktiblog.ru
какие виды прав человека перечислены ниже обществознание 7