PBS
Seasons on Earth and Mars
Winter, spring, summer, and fall—Earth experiences them all! But what about Mars? Scholars compare the planets in terms of distance, tilt, and rotation during a lesson from PBS's Space series. Great visual models of Earth and Mars, plus...
PBS
Pbs Learning Media: Scaled Images of the Solar System
Use the following lithographs to envision the scale of our solar system. View different models of planets at different scales, an infographic about the relative sizes of the planets and distance from the sun, and images of the largest...
NASA
Nasa: Mercury Planet Profile
This page from NASA provides a chart of statistical information on planet Mercury. Its mass, diameter, average temperature, and distance from the Sun are among the characteristics listed.
NASA
Nasa: Mars Planet Profile
This site has a data table of statistical information about Mars. Among the things listed are density, diameter, distance from the Sun, and much more.