DARPA and the US Air Force have started the High Mach Gas Turbine (HMGT) program to develop reusable hypersonic planes. The core technology revolves around Turbine Based Combined Cycle (TBCC) propulsion systems, which integrate turbine engines for

On October 5, 2025, the Wall Street Journal reportes that xAI is committing over $18 billion to acquire approximately 300,000 additional NVIDIA GPUs, bringing the total for Colossus 2 to around 550,000 chips. This aligns with broader announcements