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| Immagini a caso - SOLAR SYSTEM |
LL-Itokawa.jpgTarget Marker located on Itokawa (1)56 visiteOn Nov. 26, spacecraft "Hayabusa" challenged the second trial to execute landing on and sampling from the asteroid Itokawa. Hayabusa team confirmed the whole process to have been implemented and it is sure that the team succeeded in sampling materials on the surface of an asteroid for the first time in World History. Detailed data to be sent from Hayabusa will further verify the sampling.
Hayabusa started its last descent phase from the altitude of 1 km above Itokawa by command from Earth around 10:00 p.m. Nov.25 (JST). It was followed by starting the vertical descent from around 6:00 a.m. Nov.26., and, around 6:25 a.m., Sagamihara Deep Space Control Room sent a command to continue the descent.
Hayabusa challenged landing and sampling operation after a hovering phase. Hayabusa team is now sure, through the analysis of telemetry data, that a series of sequence for sampling was successfully done. Hayabusa then flew up to several kilometers altitude with normal solar paddles power, spacecraft attitude, etc.
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SunFlare-prom1743_eit_big.jpgA Twisted Solar Eruptive Prominence55 visiteCaption NASA:"Ten Earths could easily fit in the "claw" of this seemingly solar monster. The monster, though, visible on the lower left, is a huge Eruptive Prominence seen moving out from our Sun. The above dramatic image taken early in the year 2000 by the Sun-orbiting SOHO satellite. This large prominence, though, is significant not only for its size, but its shape. The twisted figure eight shape indicates that a complex magnetic field threads through the emerging solar particles. Differential rotation inside the Sun might help account for the surface explosion.
Although large prominences and energetic Coronal Mass Ejections (CMEs) are relatively rare, they are occurred more frequently near Solar Maximum, the time of peak sunspot and solar activity in the eleven-year Solar Cycle".MareKromium
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Saturn-PIA08270.jpgNight-flight around Saturn...53 visiteCaption NASA originale:"Saturn's shadow cuts sharply across the Rings in this remarkable night side view.
The Planet's Northern Latitudes are in darkness in the upper portion of this scene, while the Southern reaches are bathed in Ringshine. On the left, Sunlight filters through the Rings, and on the right the Rings are blocking the reflected Ringshine in the shadow of Saturn. The overexposed, sunlit crescent at lower left marks the transition from Saturnian day to night.
Mimas hovers below center - a tiny bauble, ornamenting the Ringed Giant.
The image was taken in visible green light with the Cassini spacecraft wide-angle camera on August 19, 2006 at a distance of approx. 1,5 MKM (about 1 MMs) from Mimas and 1,7 MKM (about 1,1 MMs) from Saturn.
Image scale is roughly 92 Km (about 57 miles) per pixel on Mimas and approx. 103 Km (about 64 miles) on Saturn".
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Mercury - Photo Mosaic - Mariner 10.jpgMercury photo-mosaic from Mariner 1064 visiteE non si tratterà , ovviamente, di una passeggiata: sono infatti previste ben tre spinte gravitazionali per la Sonda! La prima verrà data dalla Terra, nell'Agosto 2005; la seconda e la terza, da Venere, rispettivamente, nell'Ottobre 2006 e nel Giugno 2007. Dopodichè, salvo il ricorso a qualche ulteriore e, al momento, non prevedibile micro-correzione di rotta, Messenger arriverà nei pressi di Mercurio ed effettuerà , prima dell'Orbital Insertion, tre Fly-Bys (Passaggi Ravvicinati): Gennaio ed Ottobre 2008 e Settembre 2009.
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Callisto-full disk-PIA03456_modest.jpgCallisto from Galileo87 visiteCaption NASA originale:"Bright scars on a darker surface testify to a long history of impacts on Jupiter's moon Callisto in this image of Callisto from NASA's Galileo spacecraft.
The picture, taken in May 2001, is the only complete global color image of Callisto obtained by Galileo, which has been orbiting Jupiter since December 1995. Of Jupiter's four largest moons, Callisto orbits farthest from the giant planet.
Callisto's surface is uniformly cratered but is not uniform in color or brightness. Scientists believe the brighter areas are mainly ice and the darker areas are highly eroded, ice-poor material".
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Saturn-PIA08272.jpgA "Clash of Clouds" in Saturn's upper atmosphere53 visiteCaption NASA originale:"The Cassini spacecraft presents a tempestuous scene in which the clouds of Saturn's bright Equatorial Region entwine with those in darker, Southerly Latitudes.
The image was taken using a filter sensitive to wavelengths of infrared light centered at 890 nanometers. The image was acquired with the Cassini spacecraft wide-angle camera on Aug. 16, 2006 at a distance of approx. 289.000 Km (about 180.000 miles) from Saturn. Image scale is roughly 14 Km (such as about 8 miles) per pixel".
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Epimetheus.jpgEpimetheus, from approx. 87.000 Km52 visiteOriginal caption:"How did Epimetheus form? No one is yet sure. To help answer that question, this small moon has recently been imaged again in great detail by the robot spacecraft Cassini now orbiting Saturn. Epimetheus sometimes orbits Saturn in front of Janus, another small satellite, but sometimes behind. The above false-color image, taken during mid July, shows a surface covered with craters indicating great age. Epimetheus spans about 115 Km across. Epimetheus does not have enough surface gravity to restructure itself into a sphere".
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SaturnianSpace-RB1.gifViews and Features of the Space of Saturn (GIF-Movie; credits: Elisabetta Bonora - Lunexit Team)54 visitenessun commentoMareKromium
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| Ultimi arrivi - SOLAR SYSTEM |
Bardarbunga.jpgBardarbunga220 visiteMother Earth when is pissed...
And, please, do not confuse this funny-named Icelandic Volcano with the Italian "Bunga-Bunga" dance (or party)...MareKromiumAgo 15, 2023
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Jupiter-Juno-Rings.jpgFrom inside the Rings77 visitenessun commentoMareKromiumAgo 15, 2023
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Ganymede_-_Juno.jpgGanymede from Juno75 visitenessun commentoMareKromiumAgo 15, 2023
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Jupiter-Juno-Lightning_Green.jpgGreen Light on Jupiter68 visiteIf that "Green Thing" is a true Lightning, then it is a VERY funny-looking one. But we are on Jupiter and so, everything is possible! At least, so the Scientists said, swearing on the Third Newton's Law.MareKromiumAgo 15, 2023
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Jupiter_JUNO.gifUp, Down, like a Yo-Yo!72 visitenessun commentoMareKromiumAgo 15, 2023
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L-Original_Lunar_Orbiter_Frames-LO1-1098-04_med~0.jpgIs NASA always honest, clean and clear?225 visiteImmagine "vecchissima", ma SEMPRE attuale: un esempio colossale di "taroccamento" Made in NASA. Perché?MareKromiumMag 02, 2023
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Active_Sun.jpgActive Sun (Credits: Mehmet Ergün)95 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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Asteroid-2022_WJ1.jpgAsteroid 2022 WJ198 visiteDi solito riusciamo a studiare gli Asteroidi quando passano a milioni di Km o quando sono ormai caduti da qualche parte sulla Terra. Non è semplice osservare uno di questi oggetti poco prima dell'impatto e, nella storia, ci siamo riusciti solo 6 volte; questa è l'ultima, fino ad oggi. Si tratta di 2022 WJ1, un Asteroide scoperto in traiettoria di entrata il 19 novembre 2022, quasi 4 ore prima dell'impatto. L'oggetto era troppo piccolo per essere preoccupante o pericoloso, ma quello che importa è che i nostri sistemi di rilevamento stanno diventando sempre più sofisticati e veloci.
In questo caso la scoperta è stata fatta dal Catalina Sky Survey (un insieme di telescopi) in Arizona, il quale ha immediatamente allertato una rete di altri osservatori che hanno calcolato in poco tempo dove sarebbe caduto. La roccia aveva circa il 20% di possibilità di cadere da qualche parte nel continente Nord-Americano e le osservazioni di follow-up hanno permesso agli scienziati di perfezionare le loro misurazioni fino a ottenere precisamente l'ora e il luogo di impatto.
Un bolide infuocato infatti ha illuminato il cielo sopra la regione del Golden Horseshoe nel sud dell'Ontario, in Canada. Misurava circa un metro di diametro quando è entrato nell'atmosfera terrestre, rendendolo l'asteroide più piccolo mai osservato prima dell'ingresso nell'atmosfera fino ad oggi.
"Questa palla di fuoco è particolarmente significativa in quanto il meteoroide genitore è stato osservato telescopicamente prima che colpisse l'Atmosfera. Ciò rende una rara opportunità di collegare i dati telescopici di un asteroide con il suo comportamento di rottura nell'Atmosfera per poi poter raccogliere informazioni sulla sua struttura interna", ha affermato l'astronomo e fisico Peter Brown della University of Western Ontario.
Nota: ora Vi sentite più tranquilli? Io no. Stiamo "tessendo" troppe lodi circa la nostra capacità di intercettare la rotta di Asteroidi "alla svelta" e calcolarne la traiettoria, le dimensioni ed il possibile luogo di impatto. Secondo me questi Fenomeni solo cercando "fondi" (soldi, USD, insomma) e nulla di più... Scusate il cinismo.MareKromiumNov 28, 2022
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