After the moon revolution Luna/Moon notices that Earth has changed. Yeah in a good way but.. His personality and how interacts too, it's making him worried..

one day the Earth is nowhere to be seen.. He's not in his orbit and near the asteroid belt.. Mars and Venus never interacted with him nowadays so they didn't know where he went

Moon/Luna:EARTH?.. panting where did he go!? He wouldn't go near the sun again.. He wouldn't do it again right..?