"Explore the interrelated system that includes earth; Investigate the technological and scientific advances that help us study spce."--Cover.

What is it like in space? -- How big is the solar system? -- What is in the solar system? -- How does earth travel around the Sun? -- How Does the Sun Affect Earth? -- What are the other parts of the solar system? -- How Does the Moon affect earth? -- Which tools can help us explore space? -- How do spacecraft travel to space? -- What are the costs and benefits of exploring space? -- What is it like to live in space? -- Think tank: Design a developmental plan.