News of Sol's return to full brightness

Years after arriving on Erid, Rocky brings Grace the news that their sun, Sol, has returned to its full pre-Astrophage brightness. This confirms that the beetles successfully reached Earth and that the Taumoeba solution worked, saving humanity. The news is an emotional culmination of Grace's long journey, validating all his sacrifices and efforts. It brings closure to the central conflict and allows Grace to finally feel that his life had meaning.