The second richest billionaire on the world Elon Musk dreamed to go to the Mars

Billionaire Elon Musk shocked the world last year when he announced that he would sell his entire home to focus on his ambition to send humans to Mars.

After that, the SpaceX boss sold each of his houses in turn, except for a giant mansion in San Francisco. Now that it has also hit the market, Elon Musk is officially literally "homeless" - an oddity for one of the richest people in the world.