Scarlet System
From Tardis Wiki, the free Doctor Who reference
The Scarlet System was a system with a distinctive red tint. It was the home of the Pallushi civilisation. a mighty civilisation spanning a billion years. The Tenth Doctor, Rose Tyler, and the Walker Expedition watched as it was destroyed by the black hole K37 Gem 5 in 43K2.1. (DW: The Impossible Planet)