Martin's World was an uninhabited planet in the Milky Way galaxy which held a Stargate and was the former home to Martin Lloyd's people. The entire planet, however, lies in ruin as it was attacked by the Goa'uld. Martin came back to the planet with SG-1 and realized that the rest of his people had been wiped out by the Goa'uld for they lost the war. And after seeing the condition of his planet, he returned to Earth. (SG1: "Point of No Return")