Hi and welcome to Settle the Solar System, a Lunar Homestead podcast.This episode covers some basic Lunar geology, which is called selenology, after the Greek goddess of the Moon, Selune. I’m calling it Selenology 101 and it will cover the origin of Luna, its internal structure, and some of the basic features. This way you’ll have some foundational knowledge for future episodes that will go into much more detail.Segments[00:00] - Intro[01:06] - Lunar Origin[04:45] - Lunar Internal Structure[08:19] - Nearside and Farside[10:31] - Newsletter reminder[11:15] - Mare and Terrae[15:41] - Regolith and Mega-regolith[20:13] - Listener Question - What is the Moon illusion?[23:23] - OutroKey pointsWe're pretty sure, but not certain, that Luna was formed from material ejected from a collision between Earth and a Mars-sized planet.The Earth and Luna form a double-planet system.Luna has a small iron core, a dense mantle, and a less dense crust.Luna has a Nearside and a Farside but no "dark side".Lunar geology can be roughly divided into Highlands and Mare.The Highlands and Mare are physically and chemically very different.The top 2 layers of the crust are the regolith and the mega-regolith.The regolith is bad and the mega-regolith is good.The Moon illusion is simply a trick of the brain that we don't yet understand.Calls to ActionLeave a review on this platform and on Podchaser, a podcast review site.Subscribe to the Lunar Homestead FREE weekly email newsletter and stay up-to-date on new podcasts, other content, and LH research.Financially support ongoing research and content creation. Next episodeNext week's episode will be Selenology 102 - Lunar geological periods and timeline.The Subscriber Question will be "How does the Moon affect the tides and why it's important?".Relevant linksLunar Homestead websiteAsk a question or just say "hi" - ben@lunarhomestead.com