Some excellent astronomy and space sites.

Planitarium, see the sky for any time and date.

JPass - See when the ISS will pass overhead!

Astronomy picture of the day

NASA Web servers

NASA Main page

Hubble space telescope page

Sky and Telescope magazine

Earth and Sky site

Space Weather, Sun/Earth environment

Space.com - A great source of space news and images.

JPL Solar System Simulator, Awsome !!