| Ultimi arrivi - The Sun: just a star, like many others... |
Active_Sun.jpgActive Sun (Credits: Mehmet Ergün)104 visiteCaption NASA Originale:"Our Sun is becoming a busy place. Only two years ago, the Sun was emerging from a solar minimum so quiet that months would go by without even a single sunspot. In contrast, already this year and well ahead of schedule, our Sun is unusually active, already nearing solar activity levels seen a decade ago during the last solar maximum. Our increasingly active Sun was captured two weeks ago sporting numerous interesting features. The image was recorded in a single color of light called Hydrogen Alpha, color-inverted, and false colored. Spicules carpet much of the Sun's face. The brightening towards the Sun's edges is caused by increased absorption of relatively cool solar gas and called limb darkening. Just outside the Sun's disk, several scintillating prominences protrude, while prominences on the Sun's face are known as filaments and show as light streaks. Magnetically tangled active regions are both dark and light and contain cool sunspots. As our Sun's magnetic field winds toward solar maximum over the next few years, whether the Sun's high activity will continue to increase is unknown".
“Non si presta mai attenzione a ciò che è stato fatto; si vede soltanto ciò che resta da fare"
Marie CurieMareKromiumMar 26, 2023
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Parker_Solar_Probe_trajectory.gifThe Parker Solar Probe's Trajectory95 visiteInteressante.MareKromiumNov 16, 2022
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ZB-The_Sun_1.jpgPlasma Waves (1)182 visiteDue stupende immagini che ci mostrano il Sole come mai lo avevamo visto prima: provengono dall'Inouye Solar Telescope. Tuttavia, l'importanza scientifica di questo strumento è comunque oggetto di controversia.
Esso è stato costruito sul vulcano Maui, Haleakalā, che è culturalmente e spiritualmente importante per i Nativi Hawaiani. Una parte della popolazione, infatti, sembra averlo accettato eppure c'è chi lo considera un affronto e una costruzione dei colonizzatori bianchi. E forse i Nativi hanno ragione...
MareKromiumSet 11, 2022
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ZB-The_Sun_2.jpgPlasma Waves (2)179 visiteOnde di Plasma che fluiscono nella Corona da una sorta di schema di pori a nido d'ape. Queste "bolle di Plasma" sono anche conosciute come "Granuli" e ciascuna è larga circa 1.600 Km. Ognuno di questi due frame è largo circa 82.500 Km.
MareKromiumSet 11, 2022
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ZZ-ZZ-ZZ-1-The_Sun-Full-Disk_171_final.gifBright Flare (GIF-Movie - normal)156 visitenessun commentoMareKromiumLug 25, 2022
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ZZ-ZZ-ZZ-2-The_Sun-CU_171_final.gifBright Flare (GIF-Movie - EDM)158 visitenessun commentoMareKromiumLug 25, 2022
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ZZ-ZZ-ZZ-3-The_Sun-FlareX13_20220330_171A_2048p30_Sq.gifThe always restless Sun... Sun-Flare X-13119 visitenessun commentoMareKromiumLug 25, 2022
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Solar_rotation.jpgThe "uneven" Solar Rotation134 visitenessun commentoMareKromiumMag 14, 2021
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A_-_The_Sun_-_Sunspots_-_Friedman.jpgFeatures of the Sun (picture taken in H-Alpha - False Colors)133 visiteTaken just last week (second week of November 2011), the Sun was captured sporting numerous interesting features including one of the larger Sunspot Groups yet recorded: AR 1339 visible on the image right. Only last year, the Sun was emerging from an unusually quiet Solar Minimum that lasted for years. The above image was recorded in a single color of light called Hydrogen Alpha, inverted, and false colored. Spicules cover much of the Sun's face. The gradual brightening towards the Sun's edges is caused by increased absorption of relatively cool solar gas and called limb darkening. Just over the Sun's edges, several scintillating Prominences protrude, while Prominences on the Sun's face are seen as light streaks. Possibly the most visually interesting of all are the magnetically tangled active regions containing cool Sunspots. As our Sun's Magnetic Field winds toward Solar Maximum over the next few years, increased activity will likely create times when the Sun's face is even more complex.MareKromiumNov 15, 2011
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Sunspots-EB-LXTT.jpgSummer 2011's Sunspots (by Elisabetta Bonora - Lunexit Team)202 visitenessun commentoMareKromiumAgo 08, 2011
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The_Sun-XClass_Flare-SDO20110215_015332_2048_0193.jpgSolar "X-Class" Flare86 visiteCaption NASA:"On February 14, 2011, the Sun unleashed one of its most powerful explosions, an "X-Class Flare". The blast was the largest so far in the new Solar Cycle. Erupting from Active Region AR1158 in the Sun's Southern Hemisphere, the Flare is captured here in this extreme UltraViolet image from the Solar Dynamics Observatory (SDO). The intense burst of electromagnetic radiation momentarily overwhelmed pixels in SDO's detectors causing the bright vertical blemish.
This "X-Class Flare" was also accompanied by a Coronal Mass Ejection (CME), a massive cloud of charged particles traveling outward at nearly 900 Km per second".MareKromiumFeb 18, 2011
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A-The_Sun-SOHO-LASCO-1.gifA Day of the Sun (a GIF-Movie by Dr Gianluigi Barca - Lunexit Team)89 visitenessun commentoMareKromiumFeb 03, 2011
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