The Pentagon testing office said it won’t get enough data to evaluate the combat effectiveness of the US’s first hypersonic missile until early next year, another troubling sign as the US struggles to ...

In 2022, NASA hit Dimorphos with a spacecraft. But looking back through the data, astronomers believe they have found evidence of an impact event prior to the big test.

The All-Domain Sensing Cross-Functional Team built upon seven years of success from previous DDIL experiments to plan, develop, and execute this year’s event in less than six months. The experiment ...