Relativity Space raises $650 mln for bigger 3D-printed rocket Relativity's bigger Terran R will be capable of blasting some 44,000 pounds (20,000 kilograms) to low-Earth orbit. advertisement Relativity has inked launch contracts with the U.S. Defense Department, NASA, and Iridium Communications Inc. Venture-backed startup Relativity Space, which aims to build the world's first fleet of 3D-printed rockets, said on Tuesday that it has raised $650 million from a raft of new investors including BlackRock, hedge fund Soroban Capital, and the actor Jared Leto. Though it has yet to launch a rocket, the latest capital raise gives Relativity a market valuation of $4.2 billion, making it the second-most valuable privately-held space firm behind Elon Musk's SpaceX.