THE ORIGINS SPACE TELESCOPE (OST) IS THE MISSION CONCEPT FOR THE FAR-INFRARED SURVEYOR ONE OF THE FOUR SCIENCE AND TECHNOLOGY DEFINITION STUDIES OF NASA HEADQUARTERS FOR THE 2020 ASTRONOMY AND ASTROPHYSICS DECADAL SURVEY. THE RENAMING OF THE MISSION REFLECTS TOP-LEVEL SCIENCE OBJECTIVES TO DISCOVER AND CHARACTERIZE THE MOST DISTANT GALAXIES NEARBY GALAXIES AND THE MILKY WAY EXOPLANETS AND THE OUTER REACHES OF OUR SOLAR SYSTEM. THE PROSED BUDGET REQUEST IS FOR THE PI TO CONTINUE HIS ACTIVITIES AS THE COMMUNITY CHAIR OF THE SCIENCE AND TECHNOLOGY DEFINITION TEAM (STDT) OF THE OST. FY2017-2020 ACTIVITIES INCLUDE (A) REFINING THE SCIENCE PLAN AND SCIENCE GOALS; (B) ENGINEERING DESIGN AND DEVELOPMENT OF TWO ARCHITECTURES FOR THE OST (A 9M SEGMENTED APERTURE AND A SECOND CONCEPT BASED ON THE COST AND SCIENCE GOALS); (C) INSTRUMENT DEFINITION AND INSTRUMENT STUDIES AMONG OTHERS. PI WILL CONTINUE TO ENGAGE THE COMMUNITY AND INDUSTRY ON OST AND WILL REPRESENT THE STDT AT A NUMBER OF NATIONAL AND INTERNATIONAL MEETINGS OVER THE COMING MONTHS. PI WILL ALSO LEAD THE EFFORT TO DOCUMENT AND PRESENT OST TO THE 2020 DECADAL SURVEY.