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Solar and Heliospheric Observatory Homepage

Solar and Heliospheric Observatory Homepage
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SOLARCYCLE / / Solar Cycle 24 / Spaceweather / Amateur Radio VHF Aurora Website / Sunspots / Solar Flares Understanding the Effects of Solar Flares on Human Behavoir digg HJ: Have you ever noticed that some days everyone just seems to feel more on edge than normal? Perhaps everyone is reporting not sleeping well or feeling agitated? Or maybe it’s just you. Generally you feel fine but occasionally you will have a few days out of the blue where you experience any of the aforementioned qualities. They stick around for a day or two or three and then dissipate as mysteriously as they appeared. This article is intended to help you develop the awareness of how solar activity and changes in earth’s magnetic field affect your consciousness and health. - Truth Increasing Solar Activity And Disturbances In Earth’s Magnetic Field Affect Our Behavior And Increase Our Health By Michael Forrester | Prevent Disease – Climaxing yesterday, the sun will have unleashed three X-class solar flares. Solar flares are intense blooms of radiation that come from the release of the magnetic energy associated with sunspots. What is a Solar Cycle? Twinned peaks Brain storms

Aster - Archives Aster devient Recherches en didactiques des sciences et des technologies à compter de janvier 2010. La revue Aster contribue au développement de la recherche en didactique des sciences et à la diffusion des connaissances qui permettent de mieux comprendre les situations d’enseignement-apprentissage, les contenus d’enseignement et l’organisation des plans d’étude. Elle s’intéresse aux processus d’accès aux savoirs, à la construction de compétences par les élèves et les étudiants, et à la professionnalisation des enseignants et des formateurs, tant dans des situations d'éducation formelle que non formelle. Aster publie des articles utilisant des méthodes variées et des cadres théoriques divers pour étudier ces questions de l'école à l'université et dans la formation des maîtres. La revue Aster est ouverte à des contributions internationales, favorisant ainsi la circulation d’idées dans le champ de la didactique des sciences.

Astronomy Picture of the Day Planets: Sun: Overview The sun is a star, a hot ball of glowing gases at the heart of our solar system. Its influence extends far beyond the orbits of distant Neptune and Pluto. Without the sun's intense energy and heat, there would be no life on Earth. 10 Need-to-Know Things About the Sun: The sun is a star. Read More About the Sun

Geomagnetic storm severity info (K-Index) NOAA / Space Weather Prediction Center The K-index is a code that is related to the maximum fluctuations of horizontal components observed on a magnetometer relative to a quiet day, during a three-hour interval. The conversion table from maximum fluctuation (nT) to K-index, varies from observatory to observatory in such a way that the historical rate of occurrence of certain levels of K are about the same at all observatories. At SWPC, we monitor the preliminary values of the K-index, minute by minute, from a network of observatories that relay data in near-real time. The relationship between K, Kp, and estimated Kp The official planetary Kp index is derived by calculating a weighted average of K-indices from a network of geomagnetic observatories. Using minute-by-minute station K-indices, SWPC monitors the estimated Kp index in near real-time and issues alerts when thresholds are crossed. The relationship between K and A The relationship between the NOAA G-scale and Kp Limitations

le Soleil - Le champ magnétique Origine du champ magnétique solaire écrit en collaboration avec le Dr David H. Hathaway, NASA-MSFC L'inversion cyclique du champ magnétique (II) Nous avons évoqué précédemment la loi des polarités de Hale qui suit un cycle de 22 ans, double de celui des taches sombres. Cette rotation enroule le champ magnétique dans une immense spirale appelée "spirale de Parker" en l'honneur du scientifique qui la décrivit le premier. Ce champ magnétique est orienté. En février 2001 les scientifiques ont observé un important changement à ce sujet : le champ magnétique du Soleil s'est inversé. Le Dr David Hathaway nous rappelle que "cela se produit toujours à l'approche du maximum solaire. Les pôles magnétiques du Soleil resteront tels qu'ils sont, avec le pôle magnétique nord pointant vers l'hémisphère Sud, jusqu'en 2012 époque où ils s'inverseront à nouveau. Rappelons que le champ magnétique terrestre s'inverse également, mais de façon moins régulière. Prochain chapitre La dynamo solaire

Free Books : Download & Streaming : Ebook and Texts Archive : Internet Archive These books are books contributed by the community. Click here to contribute your book ! For more information and how-to please see Uploaders, please note: supports metadata about items in just about any language so long as the characters are UTF8 encoded Find books by language: Afar Books Afrikaans Books Akan Books Albanian Books Arabic Books Armenian Books Aymara Books Azerbaijan Books Balochi Books Bambara... Topic: Texts The American Libraries collection includes material contributed from across the United States. Additional collections of scanned books, articles, and other texts (usually organized by topic) are presented here. by Internet Archive Canada Welcome to the Canadian Libraries page. The John P. The California Digital Library supports the assembly and creative use of the world's scholarship and knowledge for the University of California libraries and the communities they serve. The John M.

Titan « Lights in the Dark Illustration of a sunrise above a liquid methane lake on Titan. © Ron Miller. All rights reserved. We’ve known for quite some time now that lakes of liquid methane and ethane exist on the frigid surface of Saturn’s overcast moon Titan. While the sheer presence of large amounts of liquid on another world is fascinating, one thing that’s particularly intrigued scientists about these hydrocarbon lakes is their uncanny stillness — in many radar images they appear to be literally as smooth as glass, with no indication of movement or wave action of any sort. And although liquid methane isn’t water and probably behaves differently, with Titan’s substantial atmosphere it only makes sense that some sort of waves would get kicked up across lakes so vast, even from the most moderate seasonal breezes. Read the rest of this article here. Like this post? Like this: Like Loading...

Making Waves with the Electromagnetic Spectrum | Science The electromagnetic spectrum describes the range of electromagnetic waves placed in order of increasing frequency. At one end of the spectrum are radio waves, which have a very low frequency and long wavelengths. At the other end of the spectrum are high-frequency (short wavelength) gamma rays. All electromagnetic waves travel at the same speed - the speed of light. They differ in the amount of energy they transfer, called electromagnetic radiation. In this lesson, students explore various types of electromagnetic waves. 1. 2. Why do astronomers build radio telescopes and X-ray telescopes, in addition to the optical telescopes with which most people are familiar? 3. 4. Options for the chart: 5. 6. 7.

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