Space and Astronomy
From Stargazers to Starships - This high-school level tutorial focuses on three topics: Astronomy of the Earth‚s motion in space which includes information, and some experiments and projects that teach concepts about the calendar, seasons, Kepler‚s laws, building a sundial, and more; Newtonian mechanics.
Explore the universe through the lens of the Hubble Telescope.
NASA for Students
This website needs no introduction...
NASA Space Images
The best pictures of space you are ever likely to see.
News and information about the sun-earth environment.
Stellarium is a free open source planetarium for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope.