Mercury exposed Video

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Created: 10/07/2008

Video description: Spacecraft Messenger completed its mission early Tuesday and sent stunning images of planet Mercury back to Earth. CNET's Kara Tsuboi interviews a NASA planetary scientist about why there's been so little exploration of the solar system's smallest planet and what researchers hope to glean from this mission and a planned orbit in 2011.

Mercury exposed

Spacecraft Messenger completed its mission early Tuesday and sent stunning images of planet Mercury back to Earth. CNET's Kara Tsuboi interviews a NASA planetary scientist about why there's been so little exploration of the solar system's smallest planet and what researchers hope to glean from this mission and a planned orbit in 2011.