Mars sized Planet

"Roughly 4.5 billion years ago, a Mars-sized celestial body slammed into our home planet."https://www.smithsonianmag.com/smart-news/our-moon-was-likely-covered-in-a-magma-ocean-long-ago-and-new-data-from-indias-lunar-rover-supports-that-theory-180984963/?utm_source=smithsoniandaily&utm_medium=email&utm_campaign=editorial&spMailingID=50118209&spUserID=MTQzNjUzNTAxNTQ5OAS2&spJobID=2762942663&spReportId=Mjc2Mjk0MjY2MwS2