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25-01-2004, 20:11 | #101 | |
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25-01-2004, 20:12 | #102 |
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Un'altra immagine tra qualche secondo... il tempo di trasmetterla a Terra.
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25-01-2004, 20:15 | #103 |
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2006 GMT (3:06 p.m. EST)
About 22.9 megabits of data has been received by Odyssey from the Opportunity rover.
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25-01-2004, 20:16 | #104 |
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2008 GMT (3:08 p.m. EST)
The descent images are arriving now.
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25-01-2004, 20:21 | #105 |
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2015 GMT (3:15 p.m. EST)
There has been a short break in Odyssey's playback of the data. More information is expected in a little while.
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25-01-2004, 20:57 | #106 |
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sei inarrestabile!
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Non ho niente altro da offrire alle altre persone, se non la mia stessa confusione something cold is creepin' around, blue ghost is got me, I feel myself sinkin' down L'arte non insegna niente, tranne il senso della vita |
25-01-2004, 21:16 | #107 |
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E' chiaro ora: siamo in un altro cratere, ma più basso e piatto, e soprattutto con sabbia finissima, come mai si è visto su Marte (il letto di un lago, con tutta probabilità).
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25-01-2004, 21:16 | #108 |
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2029 GMT (3:29 p.m. EST)
All three of the descent images have been received showing the approaching martian surface as Opportunity neared touchdown last night. The pictures will help scientists and engineers pinpoint the rover's exact landing site.
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25-01-2004, 21:17 | #109 |
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2034 GMT (3:34 p.m. EST)
The Opportunity rover appears to be in good condition, according to the health data just received. There have been no new fault errors and no reports from flight controllers of any problems. A NASA news conference is upcoming at 4 p.m. EST.
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25-01-2004, 21:19 | #110 |
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LE FOTO DELLA DISCESA, che aiuteranno a capire l'esatta posizione del rover nella pianura Meridiani:
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25-01-2004, 21:29 | #111 | |
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Quote:
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25-01-2004, 22:40 | #112 |
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2116 GMT (4:16 p.m. EST)
Science leader Steve Squyres says Opportunity has scored a 300-million-mile hole in one! As suspected overnight when the first images arrived on Earth, the rover has landed inside a 20-meter diameter crater. The crater is estimated to be a couple of meters deep. Therefore, it should not be a challenge for the rover to drive out, he said. A much larger crater, seen in the descent camera images, is near the lander and likely within reach of Opportunity to explore.
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26-01-2004, 00:32 | #113 |
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26-01-2004, 00:42 | #114 |
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a giudicare dalle foto sembrerebbe che la sonda abbia centrato in pieno il cratere che si vede a destra...
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26-01-2004, 10:02 | #115 |
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Opportunity achieves 'interplanetary hole in one'
BY SPACEFLIGHT NOW Posted: January 25, 2004 After a seven-month voyage spanning 300 million miles from Earth to Mars, the Opportunity rover ended up inside a tiny crater to the utter delight of mission scientists. Imagery from Opportunity is combined to generate this "overhead" view of the rover sitting on its lander at Meridiani Planum. Credit: NASA/JPL The second of NASA's two Mars Exploration Rover safely arrived in an area known as Meridiani Planum at 12:05 a.m. EST (0505 GMT) Sunday. Opportunity was sent there to study a mineral, called gray hematite, which usually forms in the presence of water. "We knew going in that there are two fundamental geological units here," Steve Squyres, the Mars rover principal investigator, said of the flat plains of Meridiani. "One of them is a thick sequence of layered rocks, fairly light in tone. We do not know what they are. And then draped on top of that is a thin coating of what appears to be some kind of fine-grain material, and that's the stuff we think contains the hematite. "My fondest hope after looking at pictures from orbit before we landed was that we would land some place that we would be close enough to a crater that we would have a chance of traversing to it and actually getting to the layered material. "Instead, what has happened is we have scored a 300-million mile interplanetary hole in one and we are actually inside a small impact crater!" Images taken by Opportunity soon after touchdown revealed the $400 million craft was sitting in a shallow crater about 65 feet in diameter. "I don't know what the odds would be for us hitting a crater like this, but this is just sensational," said Squyres. A side wall of the crater is covered with a light-colored layer of fractured rock. This tantalizing rock outcrop along with the surface-covering material means Opportunity has its scientific objectives dead ahead. "If it got any better, I couldn't stand it," said Dr. Doug Ming, rover science team member. This "postcard" from Opportunity's panoramic camera shows the strange martian landscape southwest of the rover. Credit: NASA/JPL/Cornell NASA's orbiting Mars Global Surveyor discovered a couple of years ago that Meridiani Planum featured gray hematite, prompting researchers to send a rover to the locale. Opportunity carries a set of sophisticated science tools -- spectrometers, multiple cameras and a rock-grinding device -- to unveil the composition of soil and rock samples. The rover will probe the hematite to determine if the material is from sediments of an ancient ocean, from volcanic deposits altered by hot water, or from other environmental conditions in the planet's distant past. "Hematite forms in a number of different ways on Earth but most of them involve the action of liquid water," Squyres said. The battle cry of NASA's Mars exploration program is "follow the water." Proving that Mars once had liquid water would help to determine if the planet could have supported life long ago. "Knowing just how the hematite on Mars was formed will help us characterize the past environment and determine whether that environment was favorable for life. One big question, of course, is whether life ever started on Mars. This mission probably won't tell us that, but it may well lead to future mission that can answer that question," said Joy Crisp, rover project scientist. As Opportunity was descending to the surface, a camera package on the lander snapped three photographs. The imagery shows a much larger crater -- about 500 feet across -- within a half-mile of the landing site. "It is surely, I think, within our reach," said Squyres. "The way I envision this mission going: we drive off the lander, we look at the soil, we investigate this hematite mystery, we go to the outcrop, we explore it in some detail because it is right there in front of us, ripe for the pickin', we look at that carefully, we understand that geologic unit, then we climb out of the crater, look around and then head for the big one. And it is going to be a wonderful adventure." But before Opportunity can depart its lander base, it must first stand up, deploy its wheels and cut a series of umbilicals. Engineers believe it will be the end of next week before the craft rolls onto the surface. This first image from the lander's descent camera was taken at an altitude of 1,986 meters (6,516 feet). The image spans approximately 1.6 kilometers (1 mile) across the surface of Mars. Credit: NASA/JPL This second image from the lander's descent camera was taken at an altitude of 1,690 meters (5,545 feet). The image spans approximately 1.4 kilometers (7/8 of a mile) across the surface of Mars. Credit: NASA/JPL This second image from the lander's descent camera was taken at an altitude of 1,404 meters (4,606 feet). The image spans approximately 1.2 kilometers (3/4 of a mile) across the surface of Mars. Credit: NASA/JPL
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26-01-2004, 16:32 | #116 |
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Opportunity Caught its Shadow on Entry
By Leonard David Senior Space Writer posted: 11:25 am ET 26 January 2004 PASADENA, Calif. -- Being the new arrival on Mars, the Opportunity spacecraft made use of its parachute/airbag landing system to plop itself down within Meridiani Planum. On approach to Mars’ surface, Opportunity’s Descent Image Motion Estimation System (DIMES) worked like a champ. A set of three images were taken by a camera on the bottom of the lander during the craft’s final descent DIMES is onboard to calculate the spacecraft’s horizontal motion during its final seconds of flight. The system determined that sideways motion was small, so Opportunity's computer decided not to fire the lateral rockets carried specifically for slowing that motion. That was not the case for Spirit’s landing, some three weeks ago. Parachute shadow The three DIMES photos were released Sunday here at the Jet Propulsion Laboratory, and will help determine the exact whereabouts of Opportunity at Meridiani Planum. In those photos, the shadow of Opportunity’s parachute can be seen moving across two of the three images. Opportunity did bounce and roll into a small impact crater. About one-half mile (1 kilometer) from the spacecraft’s final resting location, a large crater about 500 feet (150 meters) is within easy driving distance for the Opportunity rover. "That crater is Mother Nature’s drilling rig," James Garvin, NASA Lead Scientist for Mars Exploration in the Office of Space Science in Washington, D.C. told SPACE.com . Scientists value such crater locations as a way to see what's beneath the surface without needing to dig, he said.
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26-01-2004, 17:00 | #117 |
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è un grande......
è come se ci facesse la telecronaca della missione |
26-01-2004, 22:25 | #118 |
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MONDAY, JANUARY 26, 2004
1701 GMT (12:01 p.m. EST) The post-landing health checks of Opportunity's Microscopic Imager, Alpha Particle X-Ray Spectrometer and Mossbauer Spectrometer have been completed. Steve Squyres reports that all appear to be "in perfect health." The devices are located on the rover's science arm, and will be used for close-up examination of soil and rocks at Meridiani. 1730 GMT (12:30 p.m. EST) Opportunity is currently asleep after successfully completing its Sol 2 workday. It will be awakened tonight for Sol 3 in which the lollipop-shaped high-gain communications antenna will deploy and begin service for relaying large amounts of data from the rover. In addition, the Pancam camera package will continue its work to image landing site. Mission manager Jim Erickson says controllers are making "steady progress" to prepare Opportunity for eventually driving off the lander. The roll is expected late next week.
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26-01-2004, 22:26 | #119 |
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1830 GMT (1:30 p.m. EST)
The latest color postcard from the Opportunity shows the small crater that the rover is sitting in. http://marsrovers.jpl.nasa.gov/galle...B002R1_br2.jpg Scientists say this is the darkest landing site ever visited by a Mars spacecraft. The rim of the crater is approximately 32 feet from the rover. The crater is estimated to be 65 feet in diameter. There are rock outcrops dispersed throughout the crater. The soil appears to be a mixture of coarse gray grains and fine reddish grains. Data taken from the camera's near-infrared, green and blue filters were combined to create this approximate true color picture. The view is to the west-southwest of the rover.
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27-01-2004, 10:53 | #120 | |
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Guardate il sorriso, guardate il colore, come giocan sul viso di chi cerca l’amore: ma lo stesso sorriso, lo stesso colore, dove sono sul viso di chi ha avuto l’amore? La sofferenza è una promessa che la vita mantiene sempre. |
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