Smithsonian Institution
National Air and Space Museum: Exploring the Planets: Early Discovery
This section of the exhibition gives the history of the discovery and study of space starting with the Greeks and Romans through to the early 1900's.
Georgia Department of Education
Ga Virtual Learning: Astronomy: The Earth
In this interactive tutorial students will learn what causes the seasons, diurnal cycles and how the constellations move through the sky. Learn we are able to see other planets and how astronomical events affected life on the Earth.
American Geosciences Institute
American Geosciences Institute: Astronomy
Eight hands-on lessons module in which students explore the characteristics of planet Earth, its moons, the sun, the solar system, planets, and the difference between science fact and science fiction.
Exploratorium
Exploratorium: A Guide to Astronomy Resources
A portal to resources on the sun, the Earth's neighboring planets, and the weather in space. Find out why Saturn is the "jewel of the Solar System" and explore what happens when Venus and Mercury make their rare transits across the sun.
Nine Planets
The Nine Planets: The Moon
Explore the mythology, structure, observational history, gravitational force, and orbit of Earth's Moon.
Enchanted Learning
Enchanted Learning: All About Space: Mercury
The planet Mercury is profiled with information about its size, mass, atmosphere, length of day, and the like. Features include interactive activities and learning exercises.
Ducksters
Ducksters: Space Science: Astronomy for Kids
Kids learn about astronomy, the study of outer space including the stars, planets, comets, black holes, and the Solar System. History and astronomers in this astronomy for teachers and kids section.
Enchanted Learning
Enchanted Learning: Zoom Astronomy
Where is our Solar System? How far away is the sun? What makes up the sun? Find out all you want to know about our solar system. This is a comprehensive on-line site about space and astronomy. Check out all of the excitement!
American Museum of Natural History
American Museum of Natural History: Ology: Astronomy: In Pictures: Beyond Planet Earth
What would it be like to travel across the solar system and explore space? Take a look at some of the places that humans might go to someday, and the questions that scientists are asking.
Enchanted Learning
Enchanted Learning: Zoom Astronomy: The Earth's Atmosphere
Site provides information on the Earth's atmosphere as well as offers additional information about Earth.
Ducksters
Ducksters: Astronomy for Kids: The Planet Uranus
Kids learn about the ice giant planet Uranus of the Solar System including fun facts, mass, day, year, and distance from the Sun. Astronomy for kids and teachers.
Ducksters
Ducksters: Astronomy for Kids: The Planet Venus
Kids learn about the planet Venus of the Solar System including fun facts, mass, day, year, and distance from the Sun. Astronomy for kids and teachers.
ClassFlow
Class Flow: Astronomy 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.
Ducksters
Ducksters: Astronomy for Kids: Space Exploration Timeline
Kids learn about the timeline of the history of space exploration including early astronomy, astronauts, spacecraft, planets, and the Moon.
Cornell University
Cornell University: Astronomy: Orbital Motion and Kepler's Laws
At this site from the Astronomy Department of Cornell University, Kepler's three laws of planetary motion are stated. There are brief explanations of each, along with links to additional information on related subjects.
University of California
Uc Berkeley: At Home Astronomy: The Size and Distance of Planets
In this activity, "You will investigate the concepts of relative size and distance by creating a basic model of our solar system." Planet printouts are provided and this site contains related links.
Nine Planets
Nine Planets: The Web Nebulae
This site from Nine Planets provides introductory material about nebulae, information and images of several types of nebulae, information on Edwin Hubble, and additional related sites are provided.
Other
Sunaeon: Solar System Scope
Experience the solar system as you've never seen it before; up close and personal. Visit each planet by clicking on it, then selecting the play button to track its rotations through the calendar year. Watch the constellations move...
Other
University of Leicester: The Solar System
Resource explores the solar system, with an in depth discussion of each of the planets and their properties.
National Earth Science Teachers Association
Windows to the Universe
Windows to the Universe has developed an interactive resource about the earth, space, biological and physical sciences. Content includes information on our planet, the solar system, the universe, myths associated with space, space...
NASA
Nasa: Astronomy Picture of the Day:
A different image is featured each day along with descriptive narrative. NASA offers different and sometimes unexpected views of our Earth and the universe.
Other
Geo 154 Astronomy : Retrograde Motion
A detailed explanation of retrograde motion with three different explanations and movies to accompany them. Additional links are available for more research.
NASA
Nasa: Astronomy Picture of the Day: Uranus's Moon Umbriel
Brief overview of Umbriel from NASA. Answers the question "why is the moon so dark"? Provides additional links for more information. A NASA picture of the day.