Word: cassinis
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...spacecraft that had spent nearly seven years in flight and journeyed more than 2.2 billion miles to get where it was going, the Cassini-Huygens Saturn probe did a funny thing when it closed in on the ringed planet last week...
...separating Saturn and Earth mean that even moving at the speed of light, radio instructions take 84 min. to travel out and another 84 to come back. Thus the ship would be operating entirely alone during its high-wire maneuver, all of its commands preloaded into its computer. As Cassini-Huygens approached the gap, it carried out, as preinstructed, one final step to protect itself: it turned around and pointed its large, dish-shaped antenna forward--a makeshift shield to protect the fragile hardware behind...
...This is a story of human accomplishment," exulted Carolyn Porco, leader of the Cassini imaging team. "How can anyone not be excited about that...
...Cassini will use an elaborate suite of instruments to determine why all this meteorological hubbub is taking place on a planet that is so cold--with cloudtop temperatures of --218°F--that it shouldn't be able to cook up much weather. The best guess is that internal heat left over from the gravitational collapse that formed the planet in the first place is keeping things warm. Cassini will deploy its cameras, infrared sensors, chemical spectrographs and more to deconstruct the planet's atmosphere and find out for sure. Other instruments will map the planet's magnetosphere and gravitational...
...rings that Saturn is known, and it was close-up pictures of those rings that stole the show last week. Within minutes of Cassini's arrival, the ship's camera had fired off 61 shots of the rings, and by 10 o'clock the next morning, wide-eyed Cassini scientists were showing them to the press. "I don't think we've ever seen structures like this before," said Porco...