A moon-size weapon called the Death Star II orbits the forest moon Endor. The Rebel Alliance eventually blows up the colossal terror device, then celebrates among the trees with a race of hairy, intelligent friends called the Ewoks.
But detonating a giant metal sphere above the Ewok's lush green world is a terrible idea, according to 11 different physicists we asked. In fact, most agreed it'd trigger an "Endor holocaust."
Dave Minton, a planetary scientist at Purdue University and devoted "Star Wars" fan went so far as to provide a draft white paper.