Avra, the first Lantern, decides he's had enough of this "losing" crap and plans to show his fellow recruits just what the power of will can really do. Cue Curb-Stomp Battle from the very first constructs made by a Green Lantern Ring.
The climatic scene when the Corps desperately pushing the planet Oa against Krona with every once of willpower they have, but he is too strong and they are taking casualties. Just when Kilowog notes that they need more power, Green Lantern Mogo, the living planet, arrives to help and Krona learns the hard way how much to beware the Corps' power!
In other words, a planet uses another planet to hurl a planet-sized villain into the sun. If that is not awesome, nothing is.