A slideshow and a short multiple-choice quiz on the four inner planets of our solar system, which include Mercury, Venus, Mars, and Earth.

[Free Registration/Login may be required to access all resource tools.] Compares the characteristics of inner and outer planets.

[Free Registration/Login may be required to access all resource tools.] Compares the characteristics of inner and outer planets.

[Free Registration/Login Required] The student will be able to compare and contrast the similarities and differences of the planets. The student will be able to name three facts about inner planets and three facts about outer planets.

[Free Registration/Login may be required to access all resource tools.] Learn about the distinctive features of the planet Venus.

[Free Registration/Login may be required to access all resource tools.] Learn about the distinctive features of the planet Venus.

[Free Registration/Login may be required to access all resource tools.] Recognize the characteristics of the planet Mercury.

[Free Registration/Login may be required to access all resource tools.] Recognize the characteristics of the planet Mercury.

This planetarium program allows you to create an accurate model of the solar system with icons or pictures of each planet. You can specify a date in the past or the future, change the viewpoint to any latitude/longitude, and even view in...

This site gives you opportunities to practice putting the planets in the correct order from the sun. Press "Click here to begin" to get started.

Our solar system is filled with a wide assortment of celestial bodies - the Sun itself, our eight planets, dwarf planets, and asteroids - and on Earth, life itself! The inner solar system is occasionally visited by comets that loop in...

Images of Mercury, Venus, the Moon, Mars, and Jupiter by the Swedish Vacuum Solar Telescope.