Gumpert Geologic Time Guide Lite Guide Lite on the Geologic Time Scale.
xkcd is one of my favorite comics. Here’s one that gives a graphic depiction of the gravity wells for the planets in our solar system. Note the disclaimer on the site before letting your students loose on it. Not all…
Link to a NASA photo archive. Some were taken in space, others on the ground. Each picture includes a brief explanation of the subject. Any of these would make nice hooks for a space lesson. http://apod.nasa.gov/apod/archivepix.html
As a companion to Karl’s post, here are some pictures from outside my school.
This site has so nice images and videos of a few different hurricanes and some of the the driving forces behind them. The computer graphics that went into these are quite impressive. http://www.nasa.gov/vision/earth/lookingatearth/hurricane_multimedia.html