Texas Earth & Space Science Revolution 

Astronomy/Planetary Science/Space Science:
NASA - of course!

NASA Astrobiology - chronicles study of life in the universe.

NASA's Imagine the Universe - for ages 14 and up.

NASA Education - Materials and resources for K-12 Teachers and Students


NASA Learning Activities for After School


NASA's Star Child - a learning center for young astronomers.

NASA's Solar System Simulator

NOAA's Cool Sites for Everyone - more links for Weather, Climate Change, Oceans         And Coasts, Satellites and Space

CHANDRA X-Ray Observatory - podcasts, photo gallery, educational materials, cool animations showing the activity surrounding a black hole!

Space.com - multimedia, news, night sky information.

Hubble Telescope - Images, discoveries, resources for teachers.

Windows to the Universe - Excellent site for all things space, climate, and polar. Images, multimedia, and teacher resources

Bad Astronomy - WebBlog by astronomer, writer, and skeptic, Phil Plait.

Solar System Live - it's true!

Home Planet - a comprehensive astronomy, space, satellite-tracking package. It's downloadable to machines which use Windows.