Welcome to the Encyclopedia of Suns! Many people are interested in astronomical research that touches on the relationship between astronomy and biology, or at least the possibility of biology on planets other than Earth....

This site presents astrophotography by Robert J. Vanderbei, a professor at Princeton University. Images are grouped month by month as well as in other categories.

This site, created by author James B. Kaler of the University of Illinois at Urbana-Champaign, gives information relating to stars such as their brightness and distance, their mass, their birth and death, and...

Created by Bill Arnett, "The Nine Planets" is an overview of the history, mythology, and current scientific knowledge of each of the planets, moons, and some other objects in our solar system. Text, images, sounds, and...

This website by Gregg Herres and William K. Hartmann of the Planetary Science Institute, outlines the leading hypothesis of the origin of the moon as caused by a massive impact of a comet with the early earth. It reviews...