Japanese billionaire Yusaku Maezawa signed with SpaceX to fly around the moon on the company's next generation rocket, CEO Elon Musk announced on Monday.

Maezawa will attempt to be the first to return to the moon in nearly half a century, launching aboard a Big Falcon Rocket (BFR), which SpaceX is developing. BFR is the flagship for Musk's vision of creating a permanent, self-sustaining human presence on Mars, and testing on the behemoth rocket is expected to begin next year.

@yousuck2020: This is BFR from @spacex #dearMoon

The trip is expected to launch in 2023.

"Ever since I was a kid, I have loved the moon. It's always there and continues to inspire humanity," said Maezawa, one of the richest people in Japan, who made his fortune as the founder of online retailers Start Today and Zozotown.

SpaceX announced in February 2017 that two passengers would be flying around the moon in the company's Crew Dragon capsule, launched by its Falcon Heavy rocket. But earlier this year, Musk said SpaceX was considering using BFR instead and on Monday confirmed that Maezawa is "the same person" who was announced before, just with a larger group now onboard.