Author’s Note

In Tidelines, Grub and Elijah discuss the existence of a ‘companion moon’. I thought it might be interesting for readers to note that this theory is strongly supported by scientific evidence, including the below article:

Jutzi M, Asphaug E. Forming the lunar farside highlands by accretion of a companion moon. Nature. 2011 Aug 3;476(7358):69-72. doi: 10.1038/nature10289. PMID: 21814278.