I don't maintain a very large list of links.  Web links often times change or become dead which makes it time consuming to keep up to date.  What follows are a few amateur photography and science links that I like to visit.

Tom Martinez's Photo Blog

Tonight's Sky - Tyler Burg

Spaceweather - The place for aurora information and other stuff

NASA's Astronomy Picture of the Day (I have 3 photos there)

Earth & Sky