Science news today spans the practical, the planetary and the geopolitical. At Intersolar Europe in Munich, SINEXCEL unveiled a new utility-scale power conversion system aimed at helping Europe’s evolving grid make better use of stored electricity, a reminder that the energy transition increasingly depends on the unglamorous hardware behind resilience and stability. In space, Canada is preparing for a symbolic changing of the guard, with Artemis II astronaut Jeremy Hansen set to leave the Canadian Space Agency in September after his historic lunar flyby, though not the mission’s legacy. And in the Pacific, science and security collide as reports say China is preparing a long-range ballistic missile test with a dummy warhead, after notifying regional governments. Together, the day’s developments show science not as an isolated pursuit, but as infrastructure, exploration and strategic power all at once.