Here is a great tutorial where you can learn how to make an awesome planet with photoshop.
Photoshop Tutorial – How to make a Planet
About the Author: Carlos Pinho
A father, a husband and a geek... Carlos was the founder of projects like The Tech Labs and Flash Enabled Blog. He is the founder of TekTuts He is passionate about technologies. Their main skills are in analytics, transport & logistics, business administration. He also writes about programming resources, trends, strategy and web development.