NASA had trouble with a confidence test for Artemis 2. The ground systems need to be repaied. NASA repaired and replaced seals after WDR-1 provided a great deal of data. They observed materially lower leak rates compared to prior observations during WDR-1. They observed enough and reached a point where waiting out additional troubleshooting was ... Read more
Helion’s Polaris prototype has become the first privately funded machine to demonstrate clearly measurable deuterium–tritium (D‑T) fusion and to reach 150 million °C plasma temperatures, marking a major but still early milestone on their path toward a commercial generator for the Microsoft PPA around 2028. Helion reports that its 7th prototype, Polaris, has achieved measurable ... Read more