Mark Sirangelo Departs NASA After 44 Days

Mark Sirangelo (Credit: SNC)

Well, that was fast.

On April 9, NASA announced the appointment of Mark Sirangelo as a special assistant to Administrator Jim Bridenstine for the purpose of overseeing the space agency’s plan to land astronauts on the moon by 2024.

On Thursday, Bridenstine announced that his new assistant is departing the agency. Sirangelo’s tenure lasted 44 days.

In announcing the appointment last month, Bridenstine said Sirangelo would

lead the planning for the proposed agency restructuring to create the Moon to Mars Mission Directorate that will manage the programs to develop the Gateway, human rated lander and surface systems to return to the Moon and establish a permanent presence. The new proposed Directorate will also manage the Exploration Research and Technology programs to enable capabilities for exploration of the Moon, Mars and beyond.

Yesterday, the NASA administrator blamed House and Senate members for refusing to approve the creation of the Moon to Mars Mission Directorate.

The proposal was not accepted at this time, so we will move forward under our current organizational structure within the Human Exploration and Operations Mission Directorate (HEO). We are exploring what organizational changes within HEO are necessary to ensure we maximize efficiencies and achieve the end state of landing the first woman and next man on the Moon by 2024.

As you also may know, Mark Sirangelo has been serving as an advisor on our lunar exploration plan and the reorganizational proposal that went forward to Congress. Given NASA is no longer pursuing the new mission directorate, Mark has opted to pursue other opportunities. I want to personally thank Mark for his service and his valuable contributions to the agency.

Sirangelo previously served as head of Sierra Nevada Corporation’s Space Systems and CEO of SpaceDev, its predecessor company. He resigned from the company in July 2018 and became a scholar in residence at the University of Colorado Boulder.

The announcement came on the same day NASA announced the awarding of a $375 million contract to Maxar Technologies for the power and propulsion element of the human-tended Lunar Gateway. The facility will serve as a base for human missions to and from the lunar surface.