Website
Other

Sloan Digital Sky Survey: Galaxy Zoo

For Students 9th - 10th
Explore the universe like you have never seen it. Take part in classifying images of galaxies taken from the Hubble telescope archives. This is a crowdsourced scientific research project.
Website
NASA

Nasa: For Educators

For Teachers 9th - 10th
Contains many links to projects and workshops, as well as educational resources.