(NEWSER– While NASA concentrates on sendingunmanned probes to Mars, a private space enthusiast plans to raise the ante—with a manned flight to Mars within the next five years, reports Wired.

Most of the details are under wraps until Wednesday, but the Inspiration Mars Foundation has announced it intends to launch the 501-day round-trip journey in January 2018, sending a person or people around the red planet and back to Earth.

Read more: Newser