. . . are mostly moving this week. Jesse W. Moore, associate administrator for space flight at the National Aeronautics and Space Administration for the last two years -- a job that has included oversight of the shuttle program -- is being moved to Houston by the space agency to become director of the Johnson Space Center. Moore will serve in both his old and new jobs through May, by which time shuttle launches are expected to have sent the German-American Ulysses spacecraft on a mission around the sun and the Galileo spacecraft to Jupiter.

Roderick A. DeArment, chief of staff for Senate Majority Leader Robert J. Dole (R-Kan.) and former senior staff member for the Finance Committee, plans to return to private law practice here this month. He will be a full partner in the firm of Covington & Burling, where he was an associate before joining the committee in 1979.

And in a different kind of move, State Department legal adviser Abraham D. Sofaer changed his voting registration from Democratic to Republican. Sofaer said he took the action because he's impressed with what he's seen of the Reagan administration since leaving the federal bench last summer to become the top lawyer to Secretary of State George P. Shultz.From news services and staff reports