Chapter 8 - Planets, Moons, and Stars
Unit D - Weather and Space
- Chapter 8 - Planets, Moons, and Stars
What objects move through space, and how do they move?
Young Naturalist Awards Essay
In the early 1900s, some astronomers believed that the color contrasts on Mars' surface were great oceans. Today we know they are huge dust storms. Track how our knowledge of Mars has changed with this seventh-grader.
A 2-D map is a great guide here on Earth—and virtually worthless for finding your way around in outer space. Take a 3-D look at mapping our solar system and universe.