Why don't you try these links to interesting places?
This is one of the largest, if not the largest, encyclopaedia available in the world. You may obtain a 7-day free trial subscription during which you will have access to enormous amounts of information about all possible areas of human activity.
This Society is one of the most active astronomical groupings in the world. It has many programmes that are concerned with astronomical education. At this Website you will have access to the ASP Catalogue on-line.
The International Astronomical Union which unites all professional astronomers in the world has a special Commission that deals with Astronomy Education. Try this new Web site.
Do you want to learn the latest news about the successful Hubble Space Telescope? Why don't you visit the very comprehensible Website of this telescope's home institute?