Elon Musk just became the world’s richest person, nudging fellow space tycoon Jeff Bezos from the top spot.

The SpaceX founder and CEO is now worth more than $185 billion, thanks in large part to the ongoing surge in the stock price of his electric-car company, Tesla, according to media reports. Bezos, who runs Amazon.com as well as the spaceflight outfit Blue Origin, is currently worth $184 billion, according to CNBC.