Endor is a habitable moon orbiting a gas giant with the same name. It has large stretches of thick forests with plentiful wildlife, including the massive Gorax. It is also homeworld of the neolithic Ewoks. It was notable for being the construction site of the Second Death Star and the scene of the Battle of Endor.
During the Battle of Endor, the second Death Star -- an object hundreds of kilometers in diameter -- was destroyed in relatively close proximity to the planet. The result of such an event would be a rain of debris more massive than the one that hit Earth during the Cretaceous–Tertiary extinction event that famously wiped out the dinosaurs.
For unknown reasons, however, debris from the Death Star's explosion did not cause serious damage to Endor's biosphere. Explanations advanced for the survival of the Ewoks include the following:
- The Rebel Alliance ships in orbit above Endor somehow intervened to stop the debris.
- While the shield generator protecting the Death Star was destroyed, independent generators remained which shielded Endor itself, vaporizing the incoming debris. This would also explain the fact that the planet's surface wasn't incinerated the minute the Death Star exploded.