SPACEX - RE-PLANS

SPACEX said it has signed the first private moon traveler, with some changes to its original game plan.

The big reveal on who is - and when the flight to moon will be - will be announced Monday at the  company's headquarters in Hawthorne, California.

It's not the same mission SpaceX founder Elon Musk outlined last year. The original plan called for two paying passengers to fly around the moon this year, using a Falcon Heavy rocket  and a Dragon crew capsule.

At the time, Musk said the pair approached SpaceX about sending them on weeklong flight and paid a ''significant'' deposit for the trip.

The new strategy is to still fly around the moon, but using an even bigger SpaceX rocket still in development that that has its own dedicated passenger ship. And now, it appears there will be only one person aboard.

Given that this new BFR rocket, as it's dubbed, has yet to be built, the flight presumably is at least a few years off.

SpaceX put out the teaser via Twitter late Thursday, and Musk also tweeted out the news. Company representatives declined to offer additional details Friday.

Musk's ultimate goal is to colonize Mars. This lunar mission - a flyby, not a landing - represents ''an important step toward enabling access for everyday people who dream of traveling to space,'' SpaceX said in a tweet.

On its website, SpaceX is touting the ''first passenger on lunar BFR mission,'' implying there will be more.

This could be humanity's first lunar mission since 1972, depending on how NASA's latest moon plans shape up. Twenty-four NASA astronauts flew to the moon from 1968 through 1972, and only 12 of them strolled its dusty surface.

Next July will mark the 50th anniversary of the first manned moon  landing by Apollo 11's  Neil Armstrong and Buzz Aldrin.

NASA  is shooting for its own flyby to the moon, with a crew, around 2023. The space agency aims to build gateway in the vicinity of the moon, complete with staff, during the 2020s.

Its envisioned as a base for exploration of the moon, Mars and beyond. [Agencies]