<span style="color: #222222;">A US spy satellite has been launched into orbit from California.</span><br />'' <br />'' <span style="color: #222222;">A powerful Delta 4 Heavy rocket carrying the National Reconnaissance Office satellite blasted off from Vandenberg Air Force Base yesterday.</span><br />'' <br />'' <span style="color: #222222;">The Delta 4 Heavy stands 71 metres tall. Other details of the mission, dubbed NROL-71, were not released.</span><br />'' <br />'' <span style="color: #222222;">The National Reconnaissance Office is responsible for launch of US intelligence satellites. </span><br />'' <br />