An official website of the United States government

Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS

A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

You are viewing ARCHIVED CONTENT released online from January 20, 2017 to January 20, 2021.

Content in this archive site is NOT UPDATED, and links may not function.

For current information, go to

A primary goal of OES is to advance American space leadership by pursing and maintaining a rules-based international framework for the long-term sustainability, commercialization and utilization of space, and by strengthening America’s role in coalitions and bilateral engagements that extend human presence deeper into outer space for long-term exploration and utilization.  The Office of Space Affairs (OES/SA) pursues this goal by:

  • Seeking international support for commercial exploitation of space that ensures responsible behavior while placing minimal burden on the U.S. private sector.
  • Consulting with other nations on the enhanced civil use of space for science, Earth observation, civil positioning, navigation, and timing, and other space-based applications.
  • Pursuing agreement among space-faring nations and commercial interests on an approach to post-International Space Station exploration, to include plans for space-based platforms for further exploration.

OES/SA leads the U.S. delegation to the United Nations Committee on the Peaceful uses of Outer Space; maintains the official U.S. registry of objects launched into outer space; oversees implementation of the 1998 Intergovernmental Agreement on the International Space Station;  and leads U.S Government consultations with other countries and international organizations on space policy and law.  OES/SA also leads interagency coordination on all civil space-related international agreements implementing important NASA, NOAA, and USGS cooperation with other space agency partners, and plays a key role in the implementation of National Space Policy focused on dual-use space applications such as global navigation satellite systems (GNSS), satellite-based earth observation, and the monitoring of physical phenomena in the Sun-Earth system (space weather).

U.S. Department of State

The Lessons of 1989: Freedom and Our Future