This is the jumping-off point as you start to research your planet for your group presentation.  I have listed some awesome links below, which will guide you to almost everything you need to know.

Remember to keep a list of the sites you use and include them on the "Resources" slide of your Keynote.  

Start by signing up for your planet groups here:  Google Doc Signup

 Have fun!

1) NASA Solar System Exploration

This is probably the best site I've found for complete information and images on our planets. 

2) NASA Space Place
This website is loaded with links to different sites and interactives, where you can compare the diameters of planets, find the mass of your planet, and do other cool things.  As you work through these sites, stay focused on gathering the information you need for your presentation!