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| Ultimi commenti - Mercury |
ZZ-Mercury-Natural_Satellite-Caduceus-PIA15542.jpgNOT ALONE!239 visiteCaption NASA:"This discovery image provides the first evidence that Mercury has a small natural satellite or moon. Visible as a small bright spot in an image taken yesterday by the Mercury Dual Imaging System (MDIS) Wide Angle Camera (WAC), the moon is approximately 70 meters (230 feet) in diameter and orbits Mercury at a mean distance of 14.300 Km (such as 8890 miles). A proposal to name the moon "Caduceus", after the staff carried by the Roman god Mercury, has been submitted by the MESSENGER team to the International Astronomical Union, the body responsible for assigning names to celestial objects.
This discovery presents an unprecedented opportunity for a return of samples from the Mercury System, as Project Scientist Nat MacRulf explains. "We have yet to identify a sample from Mercury in any of the meteorite collections we have here on Earth. Such a sample would give us critical insight into the chemical composition of Mercury and the timing of crustal formation on that body, leading to a better understanding of how the planet formed and evolved. If we could obtain a sample of Caduceus, it would enhance the scientific return of the MESSENGER mission beyond our wildest dreams!"
Work on designing a scenario for sample return is already underway. MESSENGER Project Manager Burt Panini held an emergency meeting with the MESSENGER mission operations and navigation teams yesterday evening to determine if the spacecraft could be targeted toward the diminutive moon. After an intensive discussion, a unanimous decision was taken to abandon the orbit-correction maneuvers that had been planned for later this month to place the spacecraft in an eight-hour orbit. Instead, the new plan is to use the remaining propellant to crash MESSENGER into Caduceus. "Our detailed analysis tells us that if we act now, and with the right trajectory, MESSENGER will impart just enough momentum to the moon to break it free of Mercury's Gravity well and set it on an Earth-crossing trajectory suitable for recovery as a Mercury meteorite", said Panini.
This action will form the basis of a new request to NASA by the MESSENGER team for an extended extended mission, tentatively called "MESSENGER Infinitesimally Nudging Caduceus", or MIN-C for short. Once MIN-C is approved by NASA, the Spacecraft will be targeted for a collision trajectory. If Caduceus is successfully released from the pull of Mercury and placed on a course to reach Earth, we can expect the moon to arrive at Earth by 2014. "The risk to the public is reassuringly small", offers MESSENGER mission design lead Adam McJames. "We have designed a trajectory that will bring the moon to Earth at a remote location on the Wilkes Land ice sheet in Antarctica. This trajectory will avoid all population centers and will put the moon's impact site within reach for retrieval by the scientific staff at the U.S.-operated McMurdo Station".
If successful, MESSENGER's extended extended MIN-C mission will mark the first instance of the documented arrival to Earth of material from the Mercury system. Moreover, it will serve as the basis for a new Discovery-class mission proposal currently in development by the Applied Psychics Laboratory for a Mercury lander mission for in situ X-ray analysis of surface composition. That mission is to be named the Hermean On-surface Analysis with X-rays.
Date acquired: March 31, 2012
Image Mission Elapsed Time (MET): 131766564
Image ID: 6418
Instrument: Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS)
Center Latitude: 38,15° North
Center Longitude: 66,18° East
Resolution: 410 meters/pixel (0,25 miles/pixel) in the lower left corner of the image
Scale: the large crater in the center of the image (Copland) is about 210 Km (such as approx. 130 miles) in diameter.
Spacecraft Altitude: 16.200 Km (10.070 miles)
Incidence Angle: 69,1°
Emission Angle: 80,8°
Phase Angle: 138,2°MareKromium04/10/12 at 20:50AndreaGG: Se P.C.F. mi permette il francesismo direi: minchi...
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ZZ-Mercury-Natural_Satellite-Caduceus-PIA15542.jpgNOT ALONE!239 visiteCaption NASA:"This discovery image provides the first evidence that Mercury has a small natural satellite or moon. Visible as a small bright spot in an image taken yesterday by the Mercury Dual Imaging System (MDIS) Wide Angle Camera (WAC), the moon is approximately 70 meters (230 feet) in diameter and orbits Mercury at a mean distance of 14.300 Km (such as 8890 miles). A proposal to name the moon "Caduceus", after the staff carried by the Roman god Mercury, has been submitted by the MESSENGER team to the International Astronomical Union, the body responsible for assigning names to celestial objects.
This discovery presents an unprecedented opportunity for a return of samples from the Mercury System, as Project Scientist Nat MacRulf explains. "We have yet to identify a sample from Mercury in any of the meteorite collections we have here on Earth. Such a sample would give us critical insight into the chemical composition of Mercury and the timing of crustal formation on that body, leading to a better understanding of how the planet formed and evolved. If we could obtain a sample of Caduceus, it would enhance the scientific return of the MESSENGER mission beyond our wildest dreams!"
Work on designing a scenario for sample return is already underway. MESSENGER Project Manager Burt Panini held an emergency meeting with the MESSENGER mission operations and navigation teams yesterday evening to determine if the spacecraft could be targeted toward the diminutive moon. After an intensive discussion, a unanimous decision was taken to abandon the orbit-correction maneuvers that had been planned for later this month to place the spacecraft in an eight-hour orbit. Instead, the new plan is to use the remaining propellant to crash MESSENGER into Caduceus. "Our detailed analysis tells us that if we act now, and with the right trajectory, MESSENGER will impart just enough momentum to the moon to break it free of Mercury's Gravity well and set it on an Earth-crossing trajectory suitable for recovery as a Mercury meteorite", said Panini.
This action will form the basis of a new request to NASA by the MESSENGER team for an extended extended mission, tentatively called "MESSENGER Infinitesimally Nudging Caduceus", or MIN-C for short. Once MIN-C is approved by NASA, the Spacecraft will be targeted for a collision trajectory. If Caduceus is successfully released from the pull of Mercury and placed on a course to reach Earth, we can expect the moon to arrive at Earth by 2014. "The risk to the public is reassuringly small", offers MESSENGER mission design lead Adam McJames. "We have designed a trajectory that will bring the moon to Earth at a remote location on the Wilkes Land ice sheet in Antarctica. This trajectory will avoid all population centers and will put the moon's impact site within reach for retrieval by the scientific staff at the U.S.-operated McMurdo Station".
If successful, MESSENGER's extended extended MIN-C mission will mark the first instance of the documented arrival to Earth of material from the Mercury system. Moreover, it will serve as the basis for a new Discovery-class mission proposal currently in development by the Applied Psychics Laboratory for a Mercury lander mission for in situ X-ray analysis of surface composition. That mission is to be named the Hermean On-surface Analysis with X-rays.
Date acquired: March 31, 2012
Image Mission Elapsed Time (MET): 131766564
Image ID: 6418
Instrument: Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS)
Center Latitude: 38,15° North
Center Longitude: 66,18° East
Resolution: 410 meters/pixel (0,25 miles/pixel) in the lower left corner of the image
Scale: the large crater in the center of the image (Copland) is about 210 Km (such as approx. 130 miles) in diameter.
Spacecraft Altitude: 16.200 Km (10.070 miles)
Incidence Angle: 69,1°
Emission Angle: 80,8°
Phase Angle: 138,2°MareKromium04/10/12 at 15:47paolocf1963: Buonasera Amici!
Per Anakin: ? l'idea pi? i...
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ZZ-Mercury-Limb-PIA14190-PCF-LXTT-0.jpgMercurian Limb165 visiteImage Mission Elapsed Time (MET): 209890193, 209890197, 209890213
Image ID: 65109, 65110, 65114
Instrument: Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS)
WAC filter: 6,7,9 (433, 749, 996 nanometers wavelength)
Center Latitude: 3,1° North
Center Longitude: 352,3° East
Resolution: approx. 1,5 Km/pixel
Nota Lunexit: abbiamo operato una leggerissima saturazione del frame NASA-Original per evidenziare come una "fetta" (decisamente abbondante) del frame - "fetta" relativa allo Spazio circum-Mercuriano - SEMBRA essere stata, di fatto, rimossa (od oscurata). Sia detto con chiarezza: questo è quello che appare dalla semplice analisi del frame, una volta operata - ripetiamo - una leggerissima "schiaritura" (over-saturation) dell'immagine. Quali i motivi di questa operazione di make-up (se di make-up effettivamente si trattasse)? Non ne abbiamo idea. Ma le Vostre opinioni al riguardo saranno, come sempre, apprezzate.MareKromium04/10/12 at 15:45paolocf1963: Si Anakin, proprio la Sx: tagliata via di netto (a...
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ZZ-Mercury-Natural_Satellite-Caduceus-PIA15542.jpgNOT ALONE!239 visiteCaption NASA:"This discovery image provides the first evidence that Mercury has a small natural satellite or moon. Visible as a small bright spot in an image taken yesterday by the Mercury Dual Imaging System (MDIS) Wide Angle Camera (WAC), the moon is approximately 70 meters (230 feet) in diameter and orbits Mercury at a mean distance of 14.300 Km (such as 8890 miles). A proposal to name the moon "Caduceus", after the staff carried by the Roman god Mercury, has been submitted by the MESSENGER team to the International Astronomical Union, the body responsible for assigning names to celestial objects.
This discovery presents an unprecedented opportunity for a return of samples from the Mercury System, as Project Scientist Nat MacRulf explains. "We have yet to identify a sample from Mercury in any of the meteorite collections we have here on Earth. Such a sample would give us critical insight into the chemical composition of Mercury and the timing of crustal formation on that body, leading to a better understanding of how the planet formed and evolved. If we could obtain a sample of Caduceus, it would enhance the scientific return of the MESSENGER mission beyond our wildest dreams!"
Work on designing a scenario for sample return is already underway. MESSENGER Project Manager Burt Panini held an emergency meeting with the MESSENGER mission operations and navigation teams yesterday evening to determine if the spacecraft could be targeted toward the diminutive moon. After an intensive discussion, a unanimous decision was taken to abandon the orbit-correction maneuvers that had been planned for later this month to place the spacecraft in an eight-hour orbit. Instead, the new plan is to use the remaining propellant to crash MESSENGER into Caduceus. "Our detailed analysis tells us that if we act now, and with the right trajectory, MESSENGER will impart just enough momentum to the moon to break it free of Mercury's Gravity well and set it on an Earth-crossing trajectory suitable for recovery as a Mercury meteorite", said Panini.
This action will form the basis of a new request to NASA by the MESSENGER team for an extended extended mission, tentatively called "MESSENGER Infinitesimally Nudging Caduceus", or MIN-C for short. Once MIN-C is approved by NASA, the Spacecraft will be targeted for a collision trajectory. If Caduceus is successfully released from the pull of Mercury and placed on a course to reach Earth, we can expect the moon to arrive at Earth by 2014. "The risk to the public is reassuringly small", offers MESSENGER mission design lead Adam McJames. "We have designed a trajectory that will bring the moon to Earth at a remote location on the Wilkes Land ice sheet in Antarctica. This trajectory will avoid all population centers and will put the moon's impact site within reach for retrieval by the scientific staff at the U.S.-operated McMurdo Station".
If successful, MESSENGER's extended extended MIN-C mission will mark the first instance of the documented arrival to Earth of material from the Mercury system. Moreover, it will serve as the basis for a new Discovery-class mission proposal currently in development by the Applied Psychics Laboratory for a Mercury lander mission for in situ X-ray analysis of surface composition. That mission is to be named the Hermean On-surface Analysis with X-rays.
Date acquired: March 31, 2012
Image Mission Elapsed Time (MET): 131766564
Image ID: 6418
Instrument: Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS)
Center Latitude: 38,15° North
Center Longitude: 66,18° East
Resolution: 410 meters/pixel (0,25 miles/pixel) in the lower left corner of the image
Scale: the large crater in the center of the image (Copland) is about 210 Km (such as approx. 130 miles) in diameter.
Spacecraft Altitude: 16.200 Km (10.070 miles)
Incidence Angle: 69,1°
Emission Angle: 80,8°
Phase Angle: 138,2°MareKromium04/10/12 at 14:42Gianluigi: ps per Doc: il confronto di oggi sull'Apod Lun...
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ZZ-Mercury-Limb-PIA14190-PCF-LXTT-0.jpgMercurian Limb165 visiteImage Mission Elapsed Time (MET): 209890193, 209890197, 209890213
Image ID: 65109, 65110, 65114
Instrument: Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS)
WAC filter: 6,7,9 (433, 749, 996 nanometers wavelength)
Center Latitude: 3,1° North
Center Longitude: 352,3° East
Resolution: approx. 1,5 Km/pixel
Nota Lunexit: abbiamo operato una leggerissima saturazione del frame NASA-Original per evidenziare come una "fetta" (decisamente abbondante) del frame - "fetta" relativa allo Spazio circum-Mercuriano - SEMBRA essere stata, di fatto, rimossa (od oscurata). Sia detto con chiarezza: questo è quello che appare dalla semplice analisi del frame, una volta operata - ripetiamo - una leggerissima "schiaritura" (over-saturation) dell'immagine. Quali i motivi di questa operazione di make-up (se di make-up effettivamente si trattasse)? Non ne abbiamo idea. Ma le Vostre opinioni al riguardo saranno, come sempre, apprezzate.MareKromium04/10/12 at 07:23Anakin: Quando si fa riferimento alla fetta di frane rimos...
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ZZ-Mercury-Natural_Satellite-Caduceus-PIA15542.jpgNOT ALONE!239 visiteCaption NASA:"This discovery image provides the first evidence that Mercury has a small natural satellite or moon. Visible as a small bright spot in an image taken yesterday by the Mercury Dual Imaging System (MDIS) Wide Angle Camera (WAC), the moon is approximately 70 meters (230 feet) in diameter and orbits Mercury at a mean distance of 14.300 Km (such as 8890 miles). A proposal to name the moon "Caduceus", after the staff carried by the Roman god Mercury, has been submitted by the MESSENGER team to the International Astronomical Union, the body responsible for assigning names to celestial objects.
This discovery presents an unprecedented opportunity for a return of samples from the Mercury System, as Project Scientist Nat MacRulf explains. "We have yet to identify a sample from Mercury in any of the meteorite collections we have here on Earth. Such a sample would give us critical insight into the chemical composition of Mercury and the timing of crustal formation on that body, leading to a better understanding of how the planet formed and evolved. If we could obtain a sample of Caduceus, it would enhance the scientific return of the MESSENGER mission beyond our wildest dreams!"
Work on designing a scenario for sample return is already underway. MESSENGER Project Manager Burt Panini held an emergency meeting with the MESSENGER mission operations and navigation teams yesterday evening to determine if the spacecraft could be targeted toward the diminutive moon. After an intensive discussion, a unanimous decision was taken to abandon the orbit-correction maneuvers that had been planned for later this month to place the spacecraft in an eight-hour orbit. Instead, the new plan is to use the remaining propellant to crash MESSENGER into Caduceus. "Our detailed analysis tells us that if we act now, and with the right trajectory, MESSENGER will impart just enough momentum to the moon to break it free of Mercury's Gravity well and set it on an Earth-crossing trajectory suitable for recovery as a Mercury meteorite", said Panini.
This action will form the basis of a new request to NASA by the MESSENGER team for an extended extended mission, tentatively called "MESSENGER Infinitesimally Nudging Caduceus", or MIN-C for short. Once MIN-C is approved by NASA, the Spacecraft will be targeted for a collision trajectory. If Caduceus is successfully released from the pull of Mercury and placed on a course to reach Earth, we can expect the moon to arrive at Earth by 2014. "The risk to the public is reassuringly small", offers MESSENGER mission design lead Adam McJames. "We have designed a trajectory that will bring the moon to Earth at a remote location on the Wilkes Land ice sheet in Antarctica. This trajectory will avoid all population centers and will put the moon's impact site within reach for retrieval by the scientific staff at the U.S.-operated McMurdo Station".
If successful, MESSENGER's extended extended MIN-C mission will mark the first instance of the documented arrival to Earth of material from the Mercury system. Moreover, it will serve as the basis for a new Discovery-class mission proposal currently in development by the Applied Psychics Laboratory for a Mercury lander mission for in situ X-ray analysis of surface composition. That mission is to be named the Hermean On-surface Analysis with X-rays.
Date acquired: March 31, 2012
Image Mission Elapsed Time (MET): 131766564
Image ID: 6418
Instrument: Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS)
Center Latitude: 38,15° North
Center Longitude: 66,18° East
Resolution: 410 meters/pixel (0,25 miles/pixel) in the lower left corner of the image
Scale: the large crater in the center of the image (Copland) is about 210 Km (such as approx. 130 miles) in diameter.
Spacecraft Altitude: 16.200 Km (10.070 miles)
Incidence Angle: 69,1°
Emission Angle: 80,8°
Phase Angle: 138,2°MareKromium04/10/12 at 07:16Anakin: Non so se ho capito bene: vorrebbero deviare quest...
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Mercury - The Flat Plains.jpgThe Flat Plains - Mariner 1095 visiteDurante questi passaggi la Sonda (speriamo...) effettuerà la mappatura fotografica del Pianeta, coprendo anche quelle aree "non viste" da Mariner 10 (e che sono pari ad oltre il 55% dell'intera superficie!).
Gli Scienziati si aspettano grandi rivelazioni da questa Missione ed il motivo è semplice: Mercurio, a dispetto di 30 anni di "abbandono", è tutt'altro che poco interessante. Mercurio, per esempio, possiede un campo magnetico completo, proprio come la Terra.
E la cosa è assolutamente sorprendente.06/23/09 at 17:41Ufologo: Ti ringrazio come sempre delle chiarissime spiegaz...
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Mercury - The Flat Plains.jpgThe Flat Plains - Mariner 1095 visiteDurante questi passaggi la Sonda (speriamo...) effettuerà la mappatura fotografica del Pianeta, coprendo anche quelle aree "non viste" da Mariner 10 (e che sono pari ad oltre il 55% dell'intera superficie!).
Gli Scienziati si aspettano grandi rivelazioni da questa Missione ed il motivo è semplice: Mercurio, a dispetto di 30 anni di "abbandono", è tutt'altro che poco interessante. Mercurio, per esempio, possiede un campo magnetico completo, proprio come la Terra.
E la cosa è assolutamente sorprendente.06/23/09 at 15:49MareKromium: ...Si: un "Campo Magnetico Residuale" po...
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Mercury - The Flat Plains.jpgThe Flat Plains - Mariner 1095 visiteDurante questi passaggi la Sonda (speriamo...) effettuerà la mappatura fotografica del Pianeta, coprendo anche quelle aree "non viste" da Mariner 10 (e che sono pari ad oltre il 55% dell'intera superficie!).
Gli Scienziati si aspettano grandi rivelazioni da questa Missione ed il motivo è semplice: Mercurio, a dispetto di 30 anni di "abbandono", è tutt'altro che poco interessante. Mercurio, per esempio, possiede un campo magnetico completo, proprio come la Terra.
E la cosa è assolutamente sorprendente.06/23/09 at 15:47Anakin: Potrebbe avere un campo magnetico, e quindi un&quo...
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ZU-PIA12038.jpgIn search of the "Vulcanoids"63 visiteIn mid-February 2009, before and after MESSENGER's latest Perihelion (such as the closest approach to the Sun), an imaging campaign was conducted to search for "Vulcanoids": small rocky bodies that have been postulated to exist in orbits between Mercury and the Sun. Those images are still waiting to be transmitted to Earth.
The image here is from the first set of 240 MDIS images taken to look for vulcanoids, acquired in June 2008. It is a 10" exposure taken through the WAC's clear filter. Jupiter is bright and visible in the image. The camera field of view is nearly large enough to capture the entire width of Sagittarius, a constellation of the Zodiac visible low and to the South in Summer from temperate latitudes in the Northern Hemisphere. The Greek letters identify some of the brighter stars in Sagittarius.
During the Vulcanoid search campaign, 4-5 images of the same scene are taken back to back. This procedure allows Cosmic Ray strikes on the camera's detector to be identified and enables fainter objects to be detected. One such Cosmic Ray strike is labeled on this image. In this single image, the Cosmic Ray strike appears similar to the stars, but in the 4 images taken immediately after this one, the Cosmic Ray strike is gone whereas the stars remain. Images are also taken hours and days apart, so the motion of objects in the sky can be determined. If a Vulcanoid were imaged, its motion through the sky would appear very different from motions of the background stars and known Solar System objects.
No Vulcanoids have been found yet, but the latest set of acquired images will expand the volume of the search region examined so far.
Date Acquired: June 4, 2008
Image Mission Elapsed Time (MET): 121050477
Instrument: Wide Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS)
WAC Filter: 2 (clear filter)
Field of View: The WAC has a 10,5° field of viewMareKromium06/23/09 at 15:38MareKromium: Allora,
secondo me, l'oggetto (il dettagli...
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Mercury - The Flat Plains.jpgThe Flat Plains - Mariner 1095 visiteDurante questi passaggi la Sonda (speriamo...) effettuerà la mappatura fotografica del Pianeta, coprendo anche quelle aree "non viste" da Mariner 10 (e che sono pari ad oltre il 55% dell'intera superficie!).
Gli Scienziati si aspettano grandi rivelazioni da questa Missione ed il motivo è semplice: Mercurio, a dispetto di 30 anni di "abbandono", è tutt'altro che poco interessante. Mercurio, per esempio, possiede un campo magnetico completo, proprio come la Terra.
E la cosa è assolutamente sorprendente.06/23/09 at 15:31MareKromium: OTTIMO, Grande Big "G"!!!
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Mercury - The Flat Plains.jpgThe Flat Plains - Mariner 1095 visiteDurante questi passaggi la Sonda (speriamo...) effettuerà la mappatura fotografica del Pianeta, coprendo anche quelle aree "non viste" da Mariner 10 (e che sono pari ad oltre il 55% dell'intera superficie!).
Gli Scienziati si aspettano grandi rivelazioni da questa Missione ed il motivo è semplice: Mercurio, a dispetto di 30 anni di "abbandono", è tutt'altro che poco interessante. Mercurio, per esempio, possiede un campo magnetico completo, proprio come la Terra.
E la cosa è assolutamente sorprendente.06/23/09 at 15:28Gianluigi: Si credeva non ne avesse per via della sua lenta r...
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