标签：行星旅行 相关文章
Jupiter is a planet that knows how to exert its influence on the solar system, and how to impress even the season traveler. You can fly around the earth in a jumbo jet in less than two days. Try this on Jumbo Jupiter and youll be in the air for three
自然百科2012年
These are just bold first steps on a journey that's just begun. Even before the mission is over, Cassini has left a thirst for a return trip. Planetary explorer Jonathan Lunan and aeronautical pioneer Julia Nod think they know the perfect way to do i
自然百科2012年
Everyone is familiar with the rings of Saturn. But what would you highlight if it were you sending back the postcards? Every tour itinerary has one main attraction. With Saturn, you just can't miss the rings. As imaging team leader for Cassini, Carol
自然百科2012年
And the icy grains on the Saturnian beaches are washed by passing traffic. When a moon comes by, it creates a wake just like a motor boat creates a wake that goes behind it. And I kind of imagine the ring particles doing an intricate cosmic dance aro
自然百科2012年
Saturns apparently peaceful appearance is due to a haze of high level ammonia in the upper atmosphere, by looking deep into Saturn in the infrared, using the planets own internal heat as a light source, Cassini has revealed the planets true nature. T
自然百科2012年
We are interested in studying seasonal changes on Saturn, because of its extremes affected the rains. Already we know the sky was blue, when the northen hemisphere came out of the shadow and it's now turn sort of pinkish yellowish, hazy color, becaus
自然百科2012年
It was unraveling a puzzle and so the magnetometer team says lets go closer, as we go closer, we watched as the star went through and noticed the change in brightness, something is going on. We can see even from a distance, there seem to be this mate
自然百科2012年
Heres the surprise entry into search for life, this little moon that youd expect to be pretty dead and dull, and coming out of the South Pole of it is a jet of water ice, all the things you need for life are there. Theres an energy source, theres a w
自然百科2012年
Cassini has solved the mystery of how at least one of Saturn rails' formed, and this may help solve the bigger mystery of life beyond Earth, * may be the hottest ticket in town, but don't overlook the heavy weight container for the titan lovemoon wit
自然百科2012年
Planet earth never attempted to land on such a distant world before. With Huygens probe on final approach to Titan, operations switch to European mission control. The probe hurtled into Titans atmosphere at 6km a second, the atmosphere would have bee
自然百科2012年
Huygens landed on Titan. It/ sent back these few hundred pictures, until the batteries died and the probe froze solid. The probe landed with a thud, on basically a streambed，an area/ littered with rounded cobbles, and showed that these little rocks
自然百科2012年
The by-product of billions of years of production from the chemical smog factory in the upper atmosphere, the grains in Titan's dunes may literally fall from the sky. Like a rain of flash-frozen coffee grounds, they are swept by the wind into deep pi
自然百科2012年
Hopes and dreams of thousands of scientists and engineers are resting on the next few moments. Weve been to Saturn twice before with the voyager I and voyager II spacecraft. But rather than these quick Kodak moments, we want to take a nice long leisu
自然百科2012年
Saturn might be the second largest planet in the solar system, but like gas giant neighbor Jupiter, its a triumph of show over substance. Saturn, first of all is a big giant gas ball, actually its a big giant ball of fluid, and the outer parts of it
自然百科2012年
Imagine boarding a flight to Saturn, what would you need to know before traveling? The best ringside vantage points? The must-see moons? Think of this as your personal guide to the splendor of the Saturnian system. A wandering spot of light twice as
自然百科2012年
With Saturn's 62 known moons, Cassini finds itself in good company without of this world photo opportunity to make even a seething professional gasp. Saturn is the most photogenic planet in all the solar system, so I just, you know, I mean, you could
自然百科2012年
Breathing from a so-dubbed scuba unit and now fitted in a cross between a super ski suit and a haz-mat coverall, future Titannauts could explore with confidence. You just need that thermal protection and oxygen, and then you can play on the surface a
自然百科2012年
The Prime Meridian(本初子午线) here is the longitude, the mark on the ground, from which all great voyages are measured. This is the view back to our remarkable home planet/ that the first human out here can look forward to, a distant blue dot l
自然百科2012年
Every time we send aspacecraft to answer questions, we end up asking more. Clearly, a return to Jupiter isn't to stars. (Here we go.) In 2003, with fuel andpower running low, Galileo's 14-year odyssey was brought to an end,deliberately to ensure Euro
自然百科2012年
No planet beats Saturn for jaw-dropping beauty. Saturn is the most photogenic planet in all the solar system. Some of the pictures are to die for. But the postcards only tell part of the story. Beauty is only skin deep. It really is rolling and seeth
自然百科2012年