| Piú votate - The Sun: just a star, like many others... |
The Sun-Eit002G_b.jpgOur "restless" Sun... (7)54 visitenessun commento
(3 voti)
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The Sun-C2dblast.jpgOur "restless" Sun... (3)54 visitenessun commento
(3 voti)
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The Sun-20031202_c2_EIT304.jpgOur "restless" Sun... (1)54 visitenessun commento
(3 voti)
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Solar_rotation.jpgThe "uneven" Solar Rotation133 visitenessun commentoMareKromium
(2 voti)
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Sunspots-EB-LXTT.jpgSummer 2011's Sunspots (by Elisabetta Bonora - Lunexit Team)200 visitenessun commentoMareKromium
(2 voti)
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The_Sun-Spicules.jpgSpiculae in Solar Region 1109281 visiteCaption NASA:"Imagine a pipe as wide as a state and as long as the Earth. Now imagine that this pipe is filled with hot gas moving 50.000 Km per hour. Further imagine that this pipe is not made of metal but a transparent Magnetic Field. You are envisioning just one of thousands of young Spicules (Spiculae) on the active Sun.
Pictured above is one of the highest resolution image yet of these enigmatic Solar Flux Tubes. Spicules line the above frame of SAR 11092 that crossed the Sun last month, but are particularly evident converging on the Sunspot on the lower right.
Time-sequenced images have recently shown that Spicules last about five minutes, starting out as tall tubes of rapidly rising gas but eventually fading as the gas peaks and falls back down to the Sun. What determines the creation and dynamics of Spicules still remains a topic of the active Solar Research".MareKromium
(2 voti)
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The_Sun-489332main_euvfilament-20101016-0.jpgIntense Solar Activity on the Sun: Sunspot 1112 and Solar Flares71 visitenessun commentoMareKromium
(2 voti)
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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
(2 voti)
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The Sun~0.jpgIn the Sun...54 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".
(2 voti)
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The_Sun-XClass_Flare-SDO20110215_015332_2048_0193.jpgSolar "X-Class" Flare85 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".MareKromium
(1 voti)
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The_Sun-SS-HST.jpgThe Sun, Atlantis and Hubble54 visiteCaption NASA, da "NASA - Picture of the Day" del giorno 16 Maggio 2009:"On Wednesday, May 13th 2009, two, tiny, fast moving spots crossed an otherwise featureless Solar Disk. Not Sunspots though, the dark blemishes were silhouettes of the shuttle orbiter Atlantis and the Hubble Space Telescope side by side.
To record this sharp picture of the orbiting pair against the face of the Sun, astronomer Thierry Legault carefully set up his camera and telescope near the center of a 5 Km wide path of visibility about 100 Km South of Kennedy Space Center in Florida. He opened the shutter for 1/8000th second at 12:17 EDT, catching Atlantis and Hubble at a range of 600 Km while they were moving at a relative speed of about 7 Km-per-second.
The total duration of the transit (Sun crossing) was 0,8". Atlantis (top) is approaching Hubble prior to capturing the space telescope. Thursday (May 14, 2009), Astronauts began a series of spacewalks to perform the maintenance as part of the final mission to Hubble".MareKromium
(1 voti)
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The_Sun.JPGCold Sun? (All Filters; credits: SOHO & Dr M. Faccin)54 visitenessun commentoMareKromium
(1 voti)
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