Cernan joined the NASA astronaut corps in 1963 and flew on Gemini 9 in 1966, becoming the second American to make a spacewalk.
Associate Administrator Robert Lightfoot will serve as acting administrator starting Jan. 20.
The report indicated the "defective workmanship" in the assembly of the third-stage engine may have played a role in the failure.
The launches include Atlas 5, Delta 4, Falcon 9 and Falcon Heavy launches, as well as a Minotaur 4.
Google acquired what was then known as Skybox Imaging in 2014 for an estimated $500 million but now appears interested in selling the company as it seeks to cut costs.
The walk took six and a half hours to swap out old batteries used by the station's power system.
The memos covered the ISS, Mars exploration plans, and development of commercial space capabilities.
Bridenstine, an Oklahoma Republican active on space issues in the House, has reportedly talked with Vice President-elect Mike Pence about the position, although no final decision has been made by the transition team.
The space policy issued by the Trump campaign prior to the election called for recreating the council, last in place in the administration of President George H.W. Bush.
The Progress MS-04 spacecraft was lost during a Dec. 1 launch to the International Space Station.
United Launch Alliance is paying the federal government $100,000 to settle allegations employees received kickbacks from a subcontractor.