Libro de Visitas

Richarddwemy

18 Aug 2024 - 02:51 pm

Johannes Kepler thought he sketched Mercury orbiting across the sun. What he actually captured has solved a solar mystery
kra9.at
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.
https://kra-9.at
2krn.at
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.

Glenntroug

18 Aug 2024 - 02:46 pm

Jokabet Casino Espana: analisis completo (2024)
jokabet-casino-es.com
Introduccion a Jokabet Casino
Jokabet Casino ha emergido como una de las plataformas de juegos de azar en linea mas populares en Espana en 2024. Este analisis completo tiene como objetivo proporcionar una vision detallada de lo que ofrece este casino, desde su seguridad hasta sus juegos y promociones.

Jugar en Jokabet Casino: ?Es seguro y confiable?
Antes de aventurarte en el mundo de Jokabet Casino, es natural preguntarse sobre su seguridad. La plataforma esta licenciada y regulada por autoridades reconocidas, garantizando un entorno de juego seguro y justo para todos sus usuarios.

Los mejores bonos y promociones de Jokabet Casino
Bonos de bienvenida
ofrece generosos bonos de bienvenida para nuevos jugadores, incluyendo dinero extra y giros gratis. Con un bono Jokabet inicial, puedes empezar a explorar todas las oportunidades que este casino ofrece.

Promociones regulares
Los jugadores habituales pueden disfrutar de diversas promociones regulares, como bonos de recarga y torneos.

Programas de fidelidad
El programa de fidelidad de Jokabet recompensa a los jugadores leales con puntos que pueden canjearse por premios y beneficios exclusivos.

Louisbug

18 Aug 2024 - 02:12 pm

At the end of the day, don’t we all want to be happy? Here are 5 ways to get there
юрист по бракоразводным делам
Americans are really into pursuing happiness.

What happiness means is different for each individual and may shift over a lifetime: joy, love, purpose, money, health, freedom, gratitude, friendship, romance, fulfilling work? All of the above? Something else entirely? Many have even suggested that while we may think we know what will make us happy, we are often wrong.

One man may have cracked the code for what makes a happy and healthier life — and he has the data to back him up.

Dr. Robert Waldinger is the director of the Harvard Study of Adult Development — possibly the longest-running longitudinal study on human happiness, which started back in 1938. (The original study followed two groups of males, Harvard College students and adolescents in Boston’s inner city. It was expanded in recent decades to include women and people of more diverse backgrounds.)

Plenty of components are at play in the quest for a happier life, but the key comes down to one main factor: quality relationships.

“What we found was that the important thing was to stay actively connected to at least a few people, because we all need a sense of connection to somebody as we go through life,” Waldinger told CNN Chief Medical Correspondent Dr. Sanjay Gupta recently on his podcast Chasing Life.

“And the people who were connected to other people lived longer and stayed physically healthier than the people who were more isolated,” he said. “That was the surprise in our study: not that people were happier but that they lived longer.”

Yotrdyares

18 Aug 2024 - 10:11 am

https://rabotadevushkam.net/novorossiysk/ - вакансии девушкам Новоросийск


вакансии девушкам Владимир


https://rabotadevushkam.net/volgograd/

Elizabethric

18 Aug 2024 - 09:36 am

Конечно. Всё выше сказанное правда. Давайте обсудим этот вопрос. Здесь или в PM.
In 2022, it was proven that the renbridge https://bitcoin-recovery.io/ - an unregulated alternative to exchanges for transfer of funds between blockchains - was involved in laundering at least 540 million greenbacks from current year. It is especially popular among people trying to launder money discharged as a result theft.

Vikaki

18 Aug 2024 - 08:42 am

Добро пожаловать в наш интернет-магазин интимных кремов, где вы найдёте высококачественный крем для интимных мест. Мы понимаем, как важен комфорт и внимание за самым нежным участком вашей кожи, поэтому предлагаем вам продукт, который соответствует ваши ожидания .
Наш крем для интимных мест создан с учётом всех особенностей нежной кожи. Он дерматологически протестирован и подходит для ежедневного применения. Состав крема включает в себя экологически чистые ингредиенты, которые успокаивают и защищают кожу, уменьшая дискомфорт.
Выберите наш крем для интимных мест и почувствуйте разницу уже после первого применения. Наш продукт гарантирует мягкость, гладкость и здоровый вид вашей кожи. Он быстро впитывается , что делает его отличным для использования в любой момент.
Сделайте шаг к комфорту уже сегодня! Закажите крем для интимных мест в нашем интернет-магазине интимных кремов и получите быструю доставку . Мы заботимся о вашем благополучии и готовы гарантировать только лучшее.
Лучший выбор интимного крема - https://playfina-au.com/ и https://playfinacasinoau.com/ крема для интимных мест.

Jenniferhoria

18 Aug 2024 - 07:32 am

СПАСИБО ОЧЕНЬ КЛАСНО!!!!!!!!!!!!!!!!!!
это особые игровые площадки, https://favoriweb.com/ где собраны различные покерные предметы и по их основе - форматы для игры на бабки.

Anthonyhef

18 Aug 2024 - 06:49 am

как правильно написать все таки
https://www.frutilupik.ru
какие веры есть в россии
snotolkovatelnyi.ru
http://www.sigmablog.ru
какие животные есть на букву н
sigmablog.ru
https://algoblogus.ru
как правильно сказать позвонит или позвонит
frutilupik.ru
http://lukiblog.ru
какое событие связано с датой 1147 год

Soniasooni

18 Aug 2024 - 06:43 am

Maybe these are here too? Davidsooni
https://www.slideserve.com/AdeliaZaharekomk7

EstherHoori
Soniaenels or Arinaenels here? 06893f9
https://glose.com/u/sarswebrearthne1983

Carolyncrody
https://boosty.to/GretaYoshinawne0

KristiJUP
Soniaboogy or Arinaboogy here?
https://gravatar.com/gleaming522059edb0

MaryannCet
https://www.slideserve.com/AshleySimonsendco3

VivianCak
https://vocal.media/authors/puerto-valyarta-kupit-kokain-mefedron-boshki

EthelHex
SoniaCeree or ArinaCeree here?
https://www.penname.me/@HilmaRumpfwtp1_gl/

Anitaemopy
Soniaaxior or Arinaaxior here?
Is there a user Soniasooni and Arinasooni here?

Milesval

18 Aug 2024 - 06:18 am

7K Casino https://t.me/s/casino7kzerkalo