Gain valuable insight into the global oil and gas industry's energy transition from ACCELERATE, the free weekly newsletter from Upstream and Recharge. In a June 2020 tweet, Musk explained that SpaceX is “building floating, superheavy-class spaceports” for travel to Mars, the Moon and hypersonic travel around Earth. The pair of rigs, now named Deimos and Phobos ostensibly in homage to the Martian moons, were sold in July 2020 by Houston-based Valaris to Lone Star Mineral Development for $3.5 million each. Incorporated in June 2020, Lone Star Mineral Development is registered in the name of SpaceX CFO Bret Johnsen. SpaceX’s purchase and work on the oil rigs was first identified by reporters for NASASpaceflight, a space-focused website.