Scientists Tuesday night will get their first ever close-up look at Titan, one of Saturn's moons. In December, Cassini will send a probe down through the atmosphere. NPR's David Kestenbaum reports.
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David Kestenbaum is a correspondent for NPR, covering science, energy issues and, most recently, the global economy for NPR's multimedia project Planet Money. David has been a science correspondent for NPR since 1999. He came to journalism the usual way — by getting a Ph.D. in physics first.