Moons are a popular accessory for the outer planets in our solar system, but Mercury and Venus are suspiciously unadorned. In this episode of Stuff to Blow Your Mind, Robert and Joe discuss why the two most inner planets have no moons today and whether they might have had moons in the past.
Learn more about your ad-choices at https://www.iheartpodcastnetwork.com
See omnystudio.com/listener for privacy information.