SpaceX raising $750 million at a $137 billion valuation, investors include Andreessen-Horowitz- SpaceX is raising $750 million in a new round of funding that values the company at $137 billion, according to correspondence viewed by CNBC.Elon Musk's re-usable rocket maker and satellite internet company, SpaceX, is raising $750 million in a new round of funding that values the company at $137 billion, according to correspondence obtained by CNBC.A16z also participated in Elon Musk's leveraged buyout of Twitter, a $44 billion deal that closed in late October 2022.Last year, SpaceX achieved several new milestones but faced delays to its Starship program, which is part of NASA's effort to bring astronauts back to the moon.Russia's Soyuz capsule sprung a coolant leak in December, and an investigation is underway to determine if the spacecraft can safely return the crew home or if emergency measures will need to be taken instead."