As the US struggles with delays and cost overruns in its Sentinel missile program, China and Russia are pressing forward with cutting-edge missile de ...

A SpaceX Falcon 9 rocket launch from Vandenberg Space Force Base near Lompoc could be seen in the skies over Santa Cruz ...

President Donald Trump’s expert cost-cutters in Elon Musk's Department of Government Efficiency will next target the Pentagon's defense budget – a move that could be unpopular with Republicans.