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Messenger's Inner-Solar-System Journey

At almost halfway into its seven-year loopy trek to orbit Mercury, the Messenger spacecraft makes its first flyby of the innermost planet today.

Messenger's Inner-Solar-System Journey

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Today's Mercury Flyby To Be the First Since 1974
Article | Right around noon today, if all goes as planned, a spacecraft called Messenger will swoop past the planet Mercury and begin two days of unprecedented picture-taking and data-collecting.
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