WASHINGTON โ€” NASA is considering merging its Exploration Systems  and  Space Operations mission directorates to better align with the U.S. space agencyโ€™s manned spaceflight goals, according to NASA officials.

In a Dec. 20 memo to agency employees, the heads of NASAโ€™s Exploration Systems and Space Operations mission directorates said they had been tasked by NASA Administrator Charles Bolden to produce a plan by early 2011 for combining the two organizations.

โ€œWith the upcoming retirement of the Space Shuttle and the likely transition away from the Constellation Program, planning is underway that could lead to NASAโ€™s Space Operations and Exploration Systems Mission Directorates merging to create a new directorate to manage the integrated human spaceflight portfolio for the Agency,โ€ wrote Bill Gerstenmaier and Doug Cooke, associate administrators for NASAโ€™s Exploration Systems Mission Directorate and Space Operations Mission Directorate, respectively.

โ€œWhile there has not been a final decision made, we wanted to fully inform you of this planning and the fact that we will be working the upcoming OMB โ€˜passbackโ€™ as an integrated team,โ€ the memo reads, referring to the White House Office of Management and Budgetโ€™s process for setting spending ceilings for U.S. government agencies to use in drafting their annual budget requests.

The new organization, according to the memo, โ€œwould manage the International Space Station, Commercial Crew and Cargo, Space Launch System and Multi-Purpose Crew Vehicle Programs, among others.โ€

The document also says the merger would combine the directorates into a single organization, rather than making one directorate subordinate to another. An underlying goal of the effort is to make sure โ€œeveryone has a home in the new organization.โ€