All of the Green Lanterns , including Mogo , used their rings to throw Oa and slam Krona into the sun to eliminate him for good .
The Lanterns decided to use the planet Oa itself as a weapon against Krona .
All of the Lanterns   , including Mogo , used Krona 's rings to Oa Oa and Krona Krona into the sun to eliminate him for good .
The Lanterns decided to use the planet Oa itself as a weapon against Krona .