SpaceX, the aerospace giant founded by Elon Musk, officially went public, raising more than $75 billion with its offering, marking the largest IPO in history. With this, Musk is no longer only the richest man in the world, but also the first billionaire in history, with assets that double the GDP of his country of origin, South Africa. Our correspondent in New York, Mamen Sala, tells us more about it.