NASA'sCassini spacecraft made its deepest foray into the atmosphere of Titan Sunday,finding the hazy shroud around Saturn's largest moon to be a bit thicker thanscientists anticipated.
Cassini madeits closest approach to the Saturnian moon Sunday night at 7:45 p.m. PacificTime while mission scientists at NASA's Jet Propulsion Laboratory in Pasadena,Calif., awaited news of this latest flyby just 547 miles (880 km) above the surfaceof Titan.
"Wehave data playbacks today at two different Deep Space Network stations to makesure we have ? as we say here ? both belts and suspenders," Webster wrote."Engineers will also go back to analyze the data with the scientists tosee just how dense the Titan atmosphere turned out to be at our flyby altitude."
This flybymarked Cassini's 71st swing past Titan. During the rendezvous, Cassini flewbelow Titan's ionosphere, which is the layer of electrons and other chargedparticles that make up the upper part of Titan's atmosphere.
Theanticipation among Cassini's science team was so high that Webster said waitingto hear from the probe during the flyby was almost too hard to bear. It takessignals about 78 minutes to make the trip to Earth from Titan, she added.
"One ofthe 34-meter antennas at the Deep Space Network's Goldstone complex, DSS-24,was pointed at Saturn and listening for the signal that was expected to be herein just a few minutes," Webster wrote. "The data would be arriving atmy computer as quickly as they could be sent back to Earth, though there was anagonizing hour-and-18-minute delay because of the distance the data had totravel."
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