Solar System
- Solar Observatory: Current photographs and movies of the Sun
- SpaceWeather: Current "weather" in space
- The Nine Planets: Multimedia Tour of our Solar System
- Virtual Solar System: National Geographic's astronomy site
- Welcome to the Planets: Cal Tech site on Planetary Science
- Planetary Image Facility: Images from the National Air and Space Museum
- NASA Image Exchange: Directory of NASA images
- Earth Science and Solar System Exploration: NASA educational website
- Windows to the Universe: Teaching resource from the University of Michigan
- Phases of the Moon: US Naval Observatory calculations
- Solar System Simulator: JPL simulations to help visualize the Solar System
- Astronomy Workshop: Solar System animations
Meteors, Asteroids and Comets
- Asteroid and Comet hazards: Information from NASA
- American Meteor Society: Data on meteoric phenomena