How do you value the assets of about 8.3 billion people and a livable planet that is 4.54 billion years old – give or take 50 million years? The question came up in an Elon Musk tweet on July 9:“SpaceX will be worth more than the rest of Earth if we accomplish our goals.” – Elon…This story appeared on thestreet.com , 2026-08-11 19:07:00.