The world’s richest person just hit another major milestone thanks to the soaring valuation of his rocket maker SpaceX.

Elon Musk became the first person to be worth $600 billion on Monday, according to Forbes, making the gap between him becoming a trillionaire less than the gap between him and the next richest person, Google co-founder Larry Page.

It is rare for the richest person or the richest family to double the wealth of the next richest. Bill Gates achieved this in 1999 when he reached $90 billion

OpenAI overtook SpaceX as the most valuable private company. SpaceX could soon reclaim the title. It's the latest in the rivalry between Musk and Altman.

SpaceX's CEO also confirms that the company's rumored IPO is about generating funding to develop orbiting data centers using Starlink as a foundation.

Elon Musk’s plans to take SpaceX public spark debate over investment risks as the company juggles its costly Mars mission and growth of the lucrative Starlink satellite business. Investors are urged to consider SpaceX’s history of high research spending and Musk’s attention divided by multiple ventures.

Investors eyeing SpaceX's potential blockbuster IPO may need to brace themselves as CEO Elon Musk balances his risky quest to reach Mars with growing the revenue-rich Starlink satellite broadband business that would offer more reliable shareholder returns.