Hi Tim.
I use google earth alot (free version), for about 2 years I think, but I don't really know how it works. However, I do know that it uses satellite images and it downloads more images as we look around. Maybe they get the images from places like NASA?

Edited: new images -> more images

Also, for the "street view" in google earth and google maps, they drive around cars with (( BIG )) cameras on top to take pictures of the streets and houses. laugh2 You can see them here. I never saw one yet, but I think it would be neat to see.

Take care,
James

Last edited by JamesB; 06/16/10 06:02 PM.
HLA-B27+, JRA diagnosis in 1981, re-diagnosed as AS in 1988. Also iritis, colitis, and psoriasis. NSD + low carb helps me. My health makes it hard for me to post in a timely way.