The main purpose of the spacecraft "messenger" is : (1) Orbiting the Venus (2) Orbiting the Mars (3) Mapping and investigating the Mercury (4) None of the above

The main purpose of the spacecraft "messenger" is : (1) Orbiting the Venus (2) Orbiting the Mars (3) Mapping and investigating the Mercury (4) None of the above
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(3) Mapping and investigating the Mercury Explanation: Messenger (stylized as MESSENGER, whose backronym is Mercury Surface, Space Environment, Geochemistry, and Ranging") was spacecraft that orbited the planet Mercury between 2011 and 2015.
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