The Sun: just a star, like many others...
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The Sun-UvcseitG_c.jpgOur "restless" Sun... (12)54 visitenessun commento
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The Sun-W00011347.jpgThe Sun from Cassini53 visiteOriginal caption:"W00011347.jpg was taken on October 23, 2005 and received on Earth October 24, 2005. The camera was pointing toward SATURN-E-RING at approximately 6.847.402 kilometers away and the image was taken using the CL1 and IRP0 filters. This image has not been validated or calibrated".
Secondo noi questa è un'immagine del Sole e non un'istantanea relativa all'Anello E di Saturno. Un'immagine ottenuta casualmente: uno scatto nel buio, mentre una delle fotocamere di Cassini "cercava" l'Anello E.
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The Sun.jpgThe Sun62 visiteCaption NASA originale:"The ultraviolet light emitted by eleven times ionized iron at temperatures over 2 million degrees Farenheit was used to record the above picture of the Sun on September 22, 2001, the date of that year's autumnal equinox. The image was made by the EIT camera onboard the SOHO spacecraft, a space observatory which can continuously observe the Sun. Eleven times ionized iron is atomic iron with eleven of its electrons stripped away. Here the electrons are stripped by the frantic collisions with other atoms and electrons which occur at the extreme temperatures in the Solar Corona. Since electrons are negatively charged, the resulting ionized iron atom is highly positively charged. Astronomer's "shorthand" for eleven times ionized iron is written "Fe XII", the chemical symbol for iron followed by a Roman numeral 12 (Fe I is neutral iron)".
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The Sun_s Corona.jpgThe "Corona"86 visiteIn sede di commento a questa immagine (amatoriale, ma non per questo meno bella) della corona solare - come visibile durante un'eclissi totale - una piccola curiosità: sapevate che alcune delle sfumature della corona sono visibili (anzi: percepibili) soltanto dall'occhio umano?
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The Sun~0.jpgIn the Sun...53 visiteDa "NASA - Picture of the Day", del 21 Settembre 2006:" Though it's 93 MMs away, the Sun still hurts your eyes when you look at it.
But bright Sunlight (along with accurate planning and proper equipment!) resulted in this sharp silhouette of spaceship and space station.
The amazing telescopic view, recorded on September 17, 2006, captures Shuttle Orbiter Atlantis and the International Space Station in orbit over planet Earth.
At a range of 550 Km from the observing site near Mamers, Normandy, France, Atlantis (left) has just undocked and moved about 200 mt away from the Space Station.
Tomorrow (Sept. 22, 2006), yet another satellite of planet Earth can be seen in silhouette - the Moon will eclipse the Sun. This last eclipse of 2006 will be seen as an annular solar eclipse along a track that crosses Northern South America and the South Atlantic".
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The corona.jpgThe Sun's corona from TRACE (Transition Region and Coronal Explorer Satellite)95 visitenessun commento
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The limb of the Sun.jpgThe limb of the Sun64 visiteFotografia amatoriale della corona solare durante l'ultima grande eclissi totale del 1999.
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The_Sun-00.jpgThe Sun in 3D53 visitenessun commentoMareKromium
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The_Sun-01.jpgThe Sun in 3D53 visitenessun commentoMareKromium
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The_Sun-489332main_euvfilament-20101016-0.jpgIntense Solar Activity on the Sun: Sunspot 1112 and Solar Flares71 visitenessun commentoMareKromium
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The_Sun-489332main_euvfilament-20101016-1.jpgIntense Solar Activity on the Sun: Sunspot 1112 and Solar Flares76 visiteOn Saturday, October 16, 2010, NASA’s Solar Dynamics Observatory captured this stunning image of one of the most intense, Solar Flares seen in the past few months. So far there have been no reports of energetic particles from this M-class Flare interfering with NASA Spacecraft or making their way to Earth.MareKromium
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The_Sun-489332main_euvfilament-20101016-2.jpgIntense Solar Activity on the Sun: Sunspot 1112 and Solar Flares73 visiteOctober 16, 2010 - Fast-growing sunspot 1112 is crackling with solar flares. The three strongest of this 24 hour period: an M3-flare at 1910 UT on Oct. 16th, a C1-flare at 0900 UT and another C1-flare at 1740 UT on Oct. 17th. So far, none of the blasts has hurled a substantial CME (Coronal Mass Ejection) toward Earth.
In addition, a vast Filament of Magnetism is cutting across the Sun's Southern Hemisphere, measuring about 400.000 Km. A bright 'hot spot' just North of the Filament's midpoint is UV radiation from Sunspot 1112.
The proximity is no coincidence; the filament appears to be rooted in the Sunspot below. If the Sunspot flares, it could cause the entire structure to erupt. But so far, none of the Flares has destabilized the Filament.MareKromium
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