I think the Earth, space, the planets and all that stuff are amazing, but I've put off sharing on this because it's not an area of expertise for me. If you're an astronomer, or something similar, professional or amateur, and have some input I'd love to hear from you. I've focused on picking out legitimate sources.
- For elementary level or beginning astronomy try the kids site at Astronomy magazine where you can learn about the solar system, constellations, navigation using the stars, and the craters of the moon.
- The makers of Starlab portable planetarium systems have a free newsletter you can sign up for. You don't need to own a Starlab to learn from their newsletters.
- Astronomy is a pretty complex field with lots of jargon to learn. Read about Charles Messier, a leading early French astronomer who compiled a list of 100 astronomical objects. His Messier Catalog became well known as a collection of the most beautiful objects in the sky including nebulae, star clusters, and galaxies. Your little, or big, astronomer can read about spiral, lenticular and elliptical galaxies and see photos here.
- I'd recommend visiting your local planetarium (read the next sentence). Meet some enthusiastic experts or amateurs if you can. Sky and Telescope has a pretty nice site with pages on this week's sky, a place to search for local observatories and clubs, stargazing basics and projects which include building a sundial.
- Discovery School has a selection of teacher resources related to the galaxy for grades 6-12.
- Kids excited about space and want a longer study? I recommend you take a look at the Usborne Ten Terrific Weeks Upper Elementary Adventures in Space program. It comes with 4 books, including the Internet Linked Book of Astronomy and Space, and a guide. See an overview here.
I'm done wandering the galaxy for now, though I'm sure I'll be traveling again later because there are so many places to go!