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BALTIMORE (AP) - NASA's Messenger probe will make its second pass by Venus on Tuesday, which will help guide the spacecraft on its circuitous journey to Mercury and give scientists a close-up look at Earth's cloud-shrouded neighbor.
The fly-by also will give researchers the rare opportunity to pair with a European spacecraft studying Venus.
"This is the first time that we are able to take observations from two different vantage points," said Sean Solomon of the Carnegie Institution of Washington, the principal investigator for the Messenger program.
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