Mercury looms large as probe closes in for final flyby
Messenger snapped these images over a span of four days as it approached Mercury for its third and last flyby on Tuesday. The image on the far right was captured on Monday, when Messenger was about 542,000 kilometres away from the planet’s surface (Images: NASA/JHU/APL/CIW) 29 September 2009 by Rachel Courtland NASA’s Messenger spacecraft is …
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