| Piú viste - Artistic Views of the Solar System |
Saturn_s Rings.jpgTouchin' "The Rings"...96 visitenessun commento
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Mars-A.jpgMars, a LONG time ago...95 visitenessun commento
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Wild 2-PIA06283_modest.jpgComet Wild 294 visiteThis is an artist's concept depicting a view of comet Wild 2 as seen from NASA's Stardust spacecraft during its flyby of the comet on Jan. 2, 2004.
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Titan-IMG000630-br500.jpgTitan's descent (3D)93 visitenessun commento
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Earth___Moon-Galileo.jpgThe Earth-Moon System93 visiteCaption NASA originale:"A double planet? From 6,4 MKM away on December 16, 1992, NASA's Robot Spacecraft Galileo took this picture of the Earth-Moon System. The bright, sunlit half of the Earth contrasts strongly with the darker subdued colors of the Moon.
Our Moon is one of the largest moons in the Solar System. It is even larger than the planet Pluto. In this picture, the Earth-moon system actually appears to be a double planet".
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032-OPP-SOL209.jpgOver the Walls of Endurance... (2)93 visiteImmagine in cui il Sole, ora, esprime un terzo in meno della luminosità percepibile dalla Terra. Notate una differenza?
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Voyagers-Heliosphere6b.JPGWhere are the "Pioneers"?92 visitePioneer 10 will continue into interstellar space, heading generally for the red star Aldebaran, which forms the eye of Taurus. Aldebaran is about 68 LY away and it will take Pioneer over 2 MY to reach it.
The Mission of Pioneer 11 has ended: the last communication from
Pioneer 11 was received in November 1995, shortly before the Earth's motion carried it out of view of the spacecraft antenna. The spacecraft is headed toward the constellation of Aquila, Northwest of the constellation of Sagittarius. Pioneer 11 will pass near one of the stars of Sagittarius in about 4 MY.
PIONEER SPACECRAFT CONDITIONS: very cold with most temperature readings at the bottom of their scale. Bus voltage about 26 volts (nominal is 28). Uplink received from DSS 14 at -131.7 dbm. Two commands received, both confirmed as executed. Geiger Tube Telescope Instrument on, and data received.
Project Phoenix has been observing Pioneer 10 at Arecibo in Puerto Rico through the auspices of the SETI Institute. The signal from Pioneer 10 was also picked up at Arecibo on 2 March 2002.
The last telemetered data from the University of Iowa cosmic ray instrument were as follows: 2 March 2002 (39 minutes of clean data) (r = 79.83 AU) 27 April 2002 (33 minutes of clean data) (r = 80.22 AU)
At GMT 17:27:30, Saturday, 4/28/01, the signal from Pioneer 10 was received at station 63 in Madrid, the first time since August 5/6 of 2000. So it appears that Pioneer 10 has life, albeit in another mode - i.e., only in a two-way coherent mode. We have been listening for the Pioneer 10 signal in a one-way downlink non-coherent transmission mode since last summer with no success. We therefore conclude that in order [for Pioneer 10] to talk to us, we need to talk to it. This means from now on, we need two-way round-trip light time (RTLT) passes to allow the Deep Space Network (DSN) to send up a strong stable signal to lock up with a coherent downlink signal.
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Mars Odyssey.jpgMars Odyssey91 visiteDa "NASA - Picture of the Day" del 25.10.2001:"After an interplanetary journey lasting 200 days, the Mars Odyssey spacecraft has entered orbit around the Red Planet on October, 25, 2001. This success is welcome as in the past Mars has often seemed a difficult planet to visit. Beginning with the first Soviet attempts in 1960, around 30 missions have tried while only 10 or so have gone without serious mishap (...) Cautiously dipping into the Martian atmosphere, the spacecraft will gradually adjust its present wide and elliptical 20-hour orbit to a circular 2-hour orbit only 400 Km above the planet's surface. Then, its instruments and cameras will focus on exploring the climate and geologic history of Mars, including the search for water and evidence of life-sustaining environments. In the artist's conception above, the spacecraft with wing-like solar panels is imagined firing its rocket engine for Mars orbit insertion over terrain seen in natural and false-color".
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Terminator.jpgLunar Terminator90 visitenessun commento
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Mars-1.jpgSummer afternoon...On Mars!90 visitenessun commento
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Kuiper_s Belt.jpgRelationship of the Kuiper's Belt to the Oort's Cloud89 visiteThis illustration shows that the Kuiper Belt is shaped like a disk (see inset diagram) and resides within the shell-like structure of the Oort Cloud. Located on the outskirts of the Solar System, the Kuiper Belt is a "junkyard" of countless icy bodies left over from the Solar System's formation. The Oort Cloud is a vast shell of billions of comets.
The inset diagram compares Pluto's orbit with a Kuiper Belt binary object called 1998 WW31. The Kuiper Belt [the fuzzy disk] extends from inside Pluto's orbit to the edge of the Solar System.
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Voyagers-Heliosphere5b.JPGThe Voyagers at the "Final Frontier"88 visiteThe twin Voyager 1 and 2 spacecrafts continue exploring where nothing from Earth has flown before. In the 25th year after their 1977 launches, they each are much farther away from Earth and the Sun than Pluto is and approaching the boundary region - the heliopause - where the Sun's dominance of the environment ends and Interstellar Space begins. Voyager 1, more than twice as distant as Pluto, is farther from Earth than any other human-made object and speeding outward at more than 17 Km per second (38.000 miles per hour). Both spacecraft are still sending scientific information about their surroundings through the Deep Space Network (DSN).
The primary mission was the exploration of Jupiter and Saturn.
After making a string of discoveries there - such as active volcanoes on Jupiter's moon Io and intricacies of Saturn's rings - the mission was extended. Voyager 2 went on to explore Uranus and Neptune, and is still the only spacecraft to have visited those outer Planets. The adventurers' current mission, the Voyager Interstellar Mission (VIM), will explore the outermost edge of the Sun's domain. And beyond.
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