Early this year in February, SpaceX announced the charity-driven mission named Inspiration4, which will be commanded by tech entrepreneur Jared Isaacman and will have three others.

 "#Inspiration4 and @SpaceX have completed our flight readiness review and remain on track for launch!" the Inspiration4 mission team said in a tweet.

They will orbit the planet aboard SpaceX's Crew Dragon capsule every 90 minutes along a customised flight path. Upon conclusion of the three-day journey, Dragon will re-enter Earth's atmosphere for a soft water landing off the coast of Florida.

The 37-year-old Isaacman is founder and CEO of integrated payment processing company Shift4 Payments and a trained pilot.

Billionaire Issacman purchased the flight as part of an effort to raise millions for St Jude Children's Research Hospital. He has given St. Jude two seats on the Inspiration4 mission and has committed to give $100 million to St. Jude.