COLORADO SPRING: Message to Elon Musk of SpaceX: the head of Air Force Space Command is not really happy with you, and he personally supports development of a new rocket engine that would mean the United States did not have to depend on the Russians’ RD-180 rocket engine. I asked Gen. Willie Shelton, who will… Keep reading →

CAPITOL HILL: The Pentagon’s top space officials told Congress today they have launched a study to ascertain if the United States can build its own rocket engines so expensive and large spy and GPS satellites don’t have to be launched using Russian rocket engines, as they are now. Gen. William Shelton, head of Air Force Space… Keep reading →