Officials report that residents in San Luis Obispo, Santa Barbara, and Ventura counties may hear one or more sonic booms during the launch. The sound may vary depending on weather and other conditions ...

As more spacecraft are launched, the risk increases that uncontrolled space debris - those without active guidance - will ...

A sleek white aircraft became the first independently developed jet to break the sound barrier Tuesday, tearing through the air tens of thousands of feet above the Mojave Desert and a crowd of ...