NASA is trading at $20.01, down -3.52%, amid space-sector weakness. - Rocket Lab’s delayed Neutron debut and concerns about SpaceX competition have weighed on space shares. - AST SpaceMobile faced fresh pressure after Viasat urged regulators to reject its overseas-spectrum request. - Renewed AI-infrastructure debt concerns and a softer Nasdaq add to the risk-off backdrop, though the broader market is mixed.