Not only is Mars the main focus of attention right now, but with Spirit and Opportunity be such successes were are getting an amazing amount of pictures and information from the Red Planet. But, as this article indicates this may just be the start. I do remember all the controversy over the launching of the Cassini space probe due to the amount of, I believe, Plutonium it carried, and the risks of an unsuccessful launch.
Mars may be getting all the attention right now, thanks to the two NASA rovers currently crawling its surface, but scientists believe they still have plenty to learn from the rest of the heavenly bodies whirling around our solar system.
