Solar System Simulator
Travel out into the solar system and go sight seeing at this NASA site. You can view the planets and moons in the solar system from above or below any celestial body in the solar system for any date in this or any past or future year!
Intended Audience: General Reading Level: Elementary Teacher Section: No Searchable: No

Earth and Sky
Listen to the latest edition or past editions of the radio program Earth and Sky, see tonight sky chart, learn how to pronounce the names of stars and more! Visit the Kid's Section for games and activities.
Intended Audience: General Reading Level: Middle Teacher Section: Yes Searchable: Yes

Hubble Site
See what is out at the outer edges of the Universe as seen though the lens of the Hubble Telescope. This site from NASA is full of images and includes news about Hubble, multimedia examinations of the science behind Hubble and what it sees out in the Universe, and games and activities.
Intended Audience: General Reading Level: Varies Teacher Section: Yes Searchable: Yes

Astrobiology
How did life on Earth begin? Is there life on other planets? How do living things react in space? These are all questions that occupy astrobiologists. This site from NASA brings you the latest discoveries in this field and includes news, articles and other resources including a special section for students.
Intended Audience: General Reading Level: Varies Teacher Section: Yes Searchable: Yes

SkyServer
The Sloan Digital Sky Survey plans to create a digital map of the Universe. As it works towards that goal, it has created SkyServer. Using the tools at this site you can access all publicly available data from the Sloan Digital Sky Survey including images, spectra, and photometric data. In addition you will find resources for students and teachers as well as games and projects.
Intended Audience: General/Students Reading Level: Varies Teacher Section: Yes Searchable: Yes

Space Weather
Want to check whether is is going to be cloudy with a chance of meteor showers? This site will help you keep up-to-date with what is happening in the sky. Find out what the current wind speed on the Sun is, what the status of near Earth asteroids is, and when the next eclipse will occur. You find lots of images of celestial events and you can even sign up for the Space Weather News and have the latest forecast delivered to you via email.
Intended Audience: General Reading Level: Middle/High School Teacher Section: No Searchable: No

The Earth from Space
View images of the Earth taken during NASA missions. You can search for images by city, landscape feature, or weather. This site is part of a larger NASA collection of 400,000 photos, Astronaut Photography of Earth, that features photographs taken from 1961 to today.
Intended Audience: General Reading Level: N/A Teacher Section: No Searchable: Yes

Windows to the Universe
This NASA funded Earth and Space sciences site at the University of Michigan includes multimedia exhibits on the Earth, the Solar System, stars, space missions, and mythology; art, music, literature, mythology and film relating to space; images and biographies of scientists; news stories; a teacher's guide; and a "Kids Space."
Intended Audience: Students/Teachers Reading Level: Varies Teacher Section: Yes Searchable: Yes

Sky Chart
Don't have a telescope? City lights too bright for a good view of the night sky? At this site you can simulate a naked-eye view of the sky from any location on Earth, at any time of day or night, on any date from 1600 to 2400.
Intended Audience: General Reading Level: N/A Teacher Section: No Searchable: Yes

Interactive Mars Habitat
This interactive site lets you experience what it might be like to explore and live on the Red Planet.
Intended Audience: General Reading Level: N/A Teacher Section: No Searchable: No

Mars Express
Follow along as the Mars Express heads to the Red Planet. Launched by the European Space Agency, the Mars Express is scheduled to reach Mars in December of 2003. It will then eject the Beagle 2 lander which will gather scientific data and give folks the opportunity to say that the Beagle has landed!
Intended Audience: General Reading Level: Middle/High School Teacher Section: No Searchable: Yes

NASA's Mars Exploration Program
Find out what is happening with NASA's efforts to explore Mars. You can learn about current missions, explore the technology being used to explore Mars, and learn about the planet. Special sections for kids, students, and teachers provide information for space explorers of all ages.
Intended Audience: General/Students Reading Level: Varies Teacher Section: Yes Searchable: Yes

Digital Lunar Orbiter Photographic Atlas of the Moon
You'll find hundreds of images of the moon indexed by latitude, longitude, or feature name.
Intended Audience: General Reading Level: N/A Teacher Section: No Searchable: Yes

Welcome to the Planets
Learn more about the planets at this site from NASA's Jet Propulsion Laboratory. The site features photos of the planets along with planet profiles and fact.

Virtual Solar System
Get a 3-D view of the solar system at this site from National Geographic.
Intended Audience: General Reading Level: Middle Teacher Section: No Searchable: No

The Solar System in Pictures
This site has over 300 images of objects in the solar system long with a series of quizzes to test your solar system knowledge.
Intended Audience: General Reading Level: N/A Teacher Section: No Searchable: No

PlanetQuest
Are there other Earth-like planets out in the Universe? Learn more about the search for planets at this site from NASA. You can learn more about the history of looking for planets, view multimedia simulations, or learn about NASA missions and projects dedicated to identifying new planets.
Intended Audience: General Reading Level: Middle/High Teacher Section: No Searchable: Yes

NASA Kids
Do you know what you weigh on Mars? Find out at this site for kids from NASA. You can also learn about rockets and airplanes, discover what its like to live in space, explore the solar system and beyond, or play some space games!
Intended Audience: Students Reading Level: Elementary Teacher Section: Yes Searchable: Yes

Gravity Lab
Play with gravity and force at this site from the Alder Planetarium!
Intended Audience: Students Reading Level: Elementary/Middle Teacher Section: No Searchable: No

Earth in Motion
Move the Earth and change the seasons at this site from the Alder Planetarium!
Intended Audience: Students Reading Level: Elementary Teacher Section: No Searchable: No