You think way too small, especially on a scale of a billion years. Terraforming our planet is a megaengineering project in itself. It's not much of a stretch t

You think way too small, especially on a scale of a billion years. Terraforming our planet is a megaengineering project in itself. It's not much of a stretch to imagine megaengineering changing the orbit of earth, or increasing the lifespan of our star by collecting the gases for later use. You should watch Isaac Arthur the youtube channel.