Extreme Planet Makeover

http://planetquest.jpl.nasa.gov/planetMakeover/planetMakeover.html

This website, from NASA and the Jet Propulsion Laboratory at the California Institute of Technology provides visitors with the opportunity to make their own planet via a series of customizable bells and whistles. Visitors can use the controls on the site to adjust key planetary attributes such as distance from a star, planet size, and planet age. After making these adjustments, visitors can learn about the planet they have created, and also compare it with other existing planets and outer-space bodies.

From The Scout Report, Copyright Internet Scout 1994-2011. http://scout.wisc.edu/