OLD SOL

Earth was formed, not off the accretion disc,  as a wandering chuck of matter, passing thru the universe thru dust clouds and mineral clouds, and water clouds, and on and on and on for who knows how long, building itself up like a jawbreaker until it reached its present mass or close to it. This went on for Hundreds of Millions of years or perhaps Billions of years BEFORE being captured by Old Sol and into its present orbit. In other words, the Earth is likely OLDER than the Sun it orbits. Very likely the same for Mars and Venus. The outer Gas Giants undoubtedly formed off the accretion disc as they are very much the same as Old Sol. But, not the inner rocky planets.