Rice University
Characteristics of Inner Planets
Aspiring astronomers assess the inner planets using this handout. They read about the characteristics of each, noting that all four of them have rocky surfaces. Rotation and revolution are introduced, including Venus' retrograde...
Nine Planets
The Nine Planets: The Moon
Explore the mythology, structure, observational history, gravitational force, and orbit of Earth's Moon.
National Earth Science Teachers Association
Windows to the Universe: Structure of Mercury's Interior
Windows to the Universe briefly details the structure of the interior of the planet Mercury.
Science4Fun
Science4 Fun: Mars
Learn fun facts and details about the weather, geography, composition, and discovery of Mars, the fourth closest planet to the Sun.
Science4Fun
Science4 Fun: Venus
Learn fun facts and details about the atmosphere, geography, composition, and discovery of Venus, the second closest planet to the sun.