02.06.2006, 18:53 Banned
Рег-ция: 02.10.2003
Адрес: Украина, Харьков
Сообщения: 6,164
Благодарности: 5
Поблагодарили 31 раз(а) в 29 сообщениях
Оригинальный текст субтитров:
Enceladus: Сold faithfull
Narrator: small, frigid and wrinkled, at first glance this more diminutive of Saturn’s 40-plus moons does not appear to be a saturnian world of wonder. But that was before Cassini.
Torrence Johnson, “Cassini Imaging Team”: “People are always asking us whether this is fun and you got to say this is the type of thing scientists that study the solar system live for”.
Narrator: November 28, 2005. Cassini turns and points its camera on a target 90, 000 miles away.
Torrence Johnson: “What we were really blown away with was we could actually see this stuff, we could see ice particles being blown out of these geysers when we looked back from the dark side of Enceladus, back toward the sun, we saw these geysers essentially backlit by the sun”.
Narrator: Cassini imaging scientist Torrence Johnson was looking at a geological event that was talking place in deep space – 890 million miles away. It was only the third extraterrestrial world to be revealed as geologically active. But more importantly, it was the tiny moon’s smoking gun. Cassini scientists put the pieces together. They knew in space exploration, sometimes discoveries hide in plain site.
Cassini had already made three close flybys of Enceladus.
Together, The Feb. 17, and March 9 flybys provided for its cameras a tortured, fractured world of craters, plains and in the southern polar latitudes, parallel, flowing bluish fault lines they call the "tiger stripes". At the same time, its magnetometer discovered ionized gas at that altitude. But where did this come from?
The third pass came on July 14.
Cassini's infrared spectrometer finds a tiger stripe near the moon's south pole to be 279 degrees warmer than the area surrounding it.
Torrence Johnson: “When we turned the infrared system on to that area we found that that place is really hot. The south pole, just like the south pole of the earth should have been really cold and the power output from the thermal power output from that south polar region is sufficient to make us believe that there may be liquid water just tens of meters or a kilometer or so beneath the surface in this thing right at that south polar region”.
Narrator: combining data from the three flybys and the November images, the Cassini scientists put it all together.
Torrence Johnson: “These geysers we discovered on this moon are actually dumping 100 kg per second, that is a couple 100 pounds of water and water ice into the magnetosphere every second. The reason that finding evidence for liquid water in any place in the solar system is so important is because of its importance for life. On Mars we have an entire program that is designed in effect to follow the water, to find out where there was liquid water on Mars, and on Jupiter’s moon Europa we have evidence that there may be a liquid ocean underneath its ice crust, also very important. Now Enceladus joins the ranks of those bodies, Mars and Europa, that have evidence for liquid water”.
NASA’s Jet Propulsion Laboratory. California Institute of Technology.
Enceladus: Сold faithfull
Narrator: small, frigid and wrinkled, at first glance this more diminutive of Saturn’s 40-plus moons does not appear to be a saturnian world of wonder. But that was before Cassini.
Torrence Johnson, “Cassini Imaging Team”: “People are always asking us whether this is fun and you got to say this is the type of thing scientists that study the solar system live for”.
Narrator: November 28, 2005. Cassini turns and points its camera on a target 90, 000 miles away.
Torrence Johnson: “What we were really blown away with was we could actually see this stuff, we could see ice particles being blown out of these geysers when we looked back from the dark side of Enceladus, back toward the sun, we saw these geysers essentially backlit by the sun”.
Narrator: Cassini imaging scientist Torrence Johnson was looking at a geological event that was talking place in deep space – 890 million miles away. It was only the third extraterrestrial world to be revealed as geologically active. But more importantly, it was the tiny moon’s smoking gun. Cassini scientists put the pieces together. They knew in space exploration, sometimes discoveries hide in plain site.
Cassini had already made three close flybys of Enceladus.
Together, The Feb. 17, and March 9 flybys provided for its cameras a tortured, fractured world of craters, plains and in the southern polar latitudes, parallel, flowing bluish fault lines they call the "tiger stripes". At the same time, its magnetometer discovered ionized gas at that altitude. But where did this come from?
The third pass came on July 14.
Cassini's infrared spectrometer finds a tiger stripe near the moon's south pole to be 279 degrees warmer than the area surrounding it.
Torrence Johnson: “When we turned the infrared system on to that area we found that that place is really hot. The south pole, just like the south pole of the earth should have been really cold and the power output from the thermal power output from that south polar region is sufficient to make us believe that there may be liquid water just tens of meters or a kilometer or so beneath the surface in this thing right at that south polar region”.
Narrator: combining data from the three flybys and the November images, the Cassini scientists put it all together.
Torrence Johnson: “These geysers we discovered on this moon are actually dumping 100 kg per second, that is a couple 100 pounds of water and water ice into the magnetosphere every second. The reason that finding evidence for liquid water in any place in the solar system is so important is because of its importance for life. On Mars we have an entire program that is designed in effect to follow the water, to find out where there was liquid water on Mars, and on Jupiter’s moon Europa we have evidence that there may be a liquid ocean underneath its ice crust, also very important. Now Enceladus joins the ranks of those bodies, Mars and Europa, that have evidence for liquid water”.
NASA’s Jet Propulsion Laboratory. California Institute of Technology.
 |   |
