Falcon Heavy hot fire as seen from Kennedy Space Center Press Site

Northrop Grumman concluded its purchase of Orbital ATK on Wednesday, with the absorption of launch vehicle developer, satellite manufacturer, and munitions supplier as a new business unit named Northrop Grumman Innovation Systems.

United Launch Alliance’s next launch attempt for its Delta 4-Heavy rocket from Cape Canaveral with a top secret U.S. government spy satellite will be delayed to no earlier than early Tuesday.

In the last few months, teams of SpaceX engineers working on the flat coastal plains of South Texas and in a nondescript industrial yard on Florida’s Space Coast have been building two futuristic-looking stainless steel rockets — or Starships — prototypes for a reusable vehicle the company claims could one day ferry people to Mars.