| Piú votate - Artistic Views of the Solar System |
West Spur-HD-S2-PIA06917.jpgSunset on West Spur264 visiteQuesta immagine è una "invenzione" di Lunar Explorer Italia: i colori del Cielo e della superficie del Pianeta Rosso sono stati riveduti e corretti usando la logica e le immagini (ed informazioni ad esse relative) disponibili.
Il Sole che tramonta e gli effetti prismatici sono un banalissimo effetto speciale (Microsoft Photo Editor) che abbiamo utilizzato per rendere più affascinante questa (comunque) "fredda" visione di Marte.
(33 voti)
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NeptuneandTriton-PIA00344.jpgNeptune and Triton158 visiteCaption NASA originale:"Composite view showing Neptune on Triton's horizon. Neptune's South Pole is to the left; clearly visible in the planets' Southern Hemisphere is a Great Dark Spot, a large anticyclonic storm system located about 20° South. The foreground is a computer generated view of Triton's maria as they would appear from a point approximately 45 Km above the surface. The terraces visible in this image indicate multiple episodes of 'cryovolcanic' flooding. This three-dimensional view was created from a Voyager 2 image by using a 2-dimensional photoclinometric model. Relief has been exaggerated roughly 30-fold, the actual range of the relief is about 1 Km. Would Neptune appear to be rising or setting? Neither, due to the motion of Triton relative to Neptune, it would appear to move laterally along the horizon, eventually rising and setting at high latitudes".
(25 voti)
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Titan.jpgLanding on Titan186 visiteWill the Huygens probe land or splash down? In the next few days, the Cassini spacecraft currently orbiting Saturn will release a probe that will descend toward Saturn's largest moon in mid-January. That moon, Titan, has a surface normally hidden from view by thick methane cloud decks. What the car-sized flying-saucer-shaped probe will find is unknown. Once reaching the surface, Huygens may survive for as long as 150 minutes and take as many as 1.100 images. These images will be beamed up to the passing Cassini mothership for subsequent transmission to a waiting Earth. The Huygens probe is depicted above entering Titan's atmosphere and deploying its parachute. Uncovering the most mysterious moon in the Solar System may reveal a surface so strange that images of it may not be immediately understood.
(25 voti)
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Mars~0.jpgMars' Orbital Insertion138 visitenessun commento
(24 voti)
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Planets in my mind-294.jpgPlanets in my mind...110 visiteIn questa immagine, un omaggio ai Pianeti che orbitano dentro di noi.
Pianeti dai colori fantastici ed affascinanti, popolati dai nostri sogni e dalle nostre paure; Pianeti che vivono nelle e delle nostre Fantasie.
Pianeti che non verranno mai scoperti nè battezzati da nessuno scienziato; Pianeti che non verranno mai visti da nessun telescopio (nè terrestre, nè spaziale).
Pianeti che non vedranno Sonde orbitargli attorno e sui quali non camminerà mai nessun astronauta.
Sono i Pianeti della nostra Mente, in una visione "frattale" dell'Amico ed Artista, Michael Wirtz.
(Gennaio 2005)
(21 voti)
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TitanandHuygens_968A4_L.jpgTitan, Huygens and Saturn in the sky120 visiteUna "visione" davvero bellissima di Titano: forse la migliore.
(18 voti)
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Quaoar.jpgQuaoar103 visitenessun commento
(16 voti)
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Voyagers-Heliosphere3b.jpgThe "Voyagers" at the Final Frontier91 visiteVoyager 1 and 2 are still going strong and are returning valuable science data. Each Voyagers' Cosmic Ray Detector, Magnetometer, Plasma Wave Detector and Low-Energy Charged Particle Detector all still operational. In addition, the Ultraviolet Spectrometer on Voyager 1 and the Plasma Science instrument on Voyager 2 continue to return data. Both spacecraft are expected to continue to operate and send back valuable data until at least the year 2020.
The mission currently employs the equivalent of about 10 full-time people at JPL, significantly less than the approximately 300 during the height of its famed "Grand Tour" of the planets through 1989. Only two veterans of the Voyager launches still work on the flight team. Some of the summer interns the team has employed were not even born when the spacecraft were launched. The project scientist, Dr. Ed Stone of the California Institute of Technology has been with the mission since inception and two original principal investigators - Dr. Stamatios Krimigis of the Applied Physics Laboratory and Dr. Norman Ness of the University of Delaware - remain.
During the journey, the Voyagers flew by Jupiter, Saturn, Uranus and Neptune and returned nearly 80 thousand images and more than 5 trillion bits of data. After traveling through space for more than 27 years, Voyager 1 is now more than 14 billion kilometers (94 AU) from the Sun, heading in a northerly direction toward interstellar space. Voyager 2, closer at about 11 billion kilometers (75 AU), is headed on a southerly path toward interstellar space. Voyager 1 is now the furthest human-made object from the Sun, having surpassed Pioneer 10 on February 17, 1998.
Since the beginning of the Interstellar Mission in 1990, the two spacecraft have returned well more than 65 billion bits of data, though at lower data rates than during the Grand Tour. The data continue to reveal new characteristics of the effects of the sun in the distant solar wind. As an example, a Coronal Mass Ejection (CME) shock wave from the October 2003 solar storms was detected at Voyager 2 in mid-April 2004. Some of the most powerful flares in recorded history hurled billion-ton clouds of gas, called coronal mass ejections (CMEs), into the solar system. By the time the resulting shocks reached Voyager 2, about 6 months later, they had combined into Merged Interaction Regions and had slowed considerably. Traveling at 600 km/sec, it had slowed considerably from the 1500-2000 km/sec detected last Fall as the storms left the Sun. Voyager 2 measured the speed of the shock, its composition, temperature and magnetism. When combined with measurements from SOHO, Mars Odyssey, Ulysses, Cassini and other spacecraft, the Voyager data show how far-ranging CMEs evolve and dissipate.
For the past two years or so, Voyager 1 has detected phenomena unlike any encountered before in all its years of exploration. These observations and what they may infer about the approach to the termination shock have been the subject of on-going scientific debates. While some of the scientist believed that the passage past the termination shock had already begun, some of the phenomena observed were not what would have been expected. So the debate continues while even more data are being returned and analyzed. However, it is certain that the spacecraft are in a new regime of space. The observed plasma wave oscillations and increased energetic particle activity may only be the long-awaited precursor to the termination shock. If we have indeed encountered the termination shock, Voyager 1 would be the first spacecraft to enter the solar system's final frontier, a vast expanse where wind from the Sun blows hot against thin gas between the stars: interstellar space.
(16 voti)
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MarsAtmosphere.jpgHow Mars lost its atmosphere...95 visitenessun commento
(16 voti)
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000-0-Mars.jpgMeteor strike on Mars112 visiteMars may have lost much of its atmosphere during asteroid impacts early in its history.
The Beagle 2 lander will look for signatures of life on Mars, whether long-dead or still-living, by measuring the ratio of two different types of carbon in the rocks. Biological processes on Earth favour the lighter isotope of carbon, carbon-12, over the heavier carbon-13. Hence, a high carbon-12 to carbon-13 ratio is taken as evidence of life and has been found in rocks up to 4 billion years old, even where geological processing has occurred. The hope is that the same occurred on Mars.
(16 voti)
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ZZ-Pluto & Charon.jpgPluto & Charon96 visitenessun commento
(16 voti)
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Aeneas Crater on Dione.jpgAeneas Crater on Dione177 visitenessun commento
(16 voti)
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