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What We Explore: Overview
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Color image showing Mercury as a tiny black spot against the face of the orangish-red Sun.
Mercury, which is a little larger than Earth's Moon, gives a sense of scale as it passes in front of our massive Sun.
Resources regarding scale, organization and motion of the planets and bodies in the solar system.

Activities in this section focus on solar science, the rocky worlds of the inner solar system and the gas giants and icy moons of the outer solar system.

Follow the links above or below to explore the content in this section:
Awards and Recognition   Solar System Exploration Roadmap   Contact Us   Site Map   Print This Page
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Last Updated: 9 Jun 2010