Space
Astronomy facts for kids - www.planetsforkids.org
Planet Facts - www.kidzone.ws/planets
Introduction to the Earth and beyond - http://primarygamesarena.com/Play/The-Earth-And-Beyond-279
An interactive site which gives useful explanations - http://www.earthsunmoon.co.uk
Key facts relating to the Earth, Sun and Moon - http://www.schoolsobservatory.org.uk/obs/
An interactive site with facts about Earth, Sun, Moon - http://www-g.eng.cam.ac.uk/mmg/teaching/peterstidwill/interact/interact.htm
Compare sizes within the Solar system - http://sciencenetlinks.com/interactives/messenger/psc/PlanetSize.html
Planets
Lots of information about the solar system - http://solarsystem.nasa.gov/planets/
Despite the site’s name, it does point out that Pluto is no longer classified as a planet! - http://nineplanets.org/
Information, photographs & videos about the Sun and the planets in our solar system - http://www.bbc.co.uk/science/space/solarsystem/sun_and_planets