Here you will find a list of abbreviated and other terms used on this site or common in the space industry which you may find helpful to better understand space-related articles on this site or elsewhere.

Last updated: 11 November 2024

Abbreviation Meaning
ASAT Anti-Satellite Weapons
CJEU Court of Justice of the European Union
CNES Centre National d’Ètudes Spatiales
DLR German Aerospace Centre (Deutsches Zentrum für Luft- und Raumfahrt)
DSB Dispute Settlement Body
EAC European Astronaut Centre
EASA European Aviation Safety Agency
ECHR European Court of Human Rights
ECSL European Centre for Space Law
ELDO European Launch Development Organization
ESA European Space Agency
ESAC European Space Astronomy Centre
ESCAT European Centre for Space Applications and Telecommunications
ESOC European Space Operations Centre
ESRIN European Space Research Institute
ESRO European Space Research Organisation
ESTEC European Space Research and Technology Centre
EU European Union
EUMETSAT European Organisation for the Exploitation of Meteorological Satellites
EUTELSAT European Telecommunications Satellite Organization
FAA Federal Aviation Administration
GEO Geostationary Orbit
GNSS Global Navigation Satellite System
GPS Global Positioning System
HAPS High Altitude Pseudo Satellites
IAA International Academy for Astronautics
IADC Inter-Agency Space Debris Coordination Committee
ICAO International Civil Aviation Organization
ICBM Intercontinental Ballistic Missiles
ICJ Intrnational Court of Justice
IGA Intergovernmental Agreement
IISL International Institute of Space Law
ILA International Law Association
ILC International Law Commission
IMO International Maritime Organization
IMSO International Mobile Satellite Organization
ISS International Space Station
ITSO International Telecommunications Satellite Organization
ITU International Telecommunications Union
JAXA Japan Aerospace Exploration Agency
LEO Low Earth Orbit
MEO Medium Earth Orbit
NASA National Aeronautics and Space Administration
NPS Nuclear power sources
Oribital carrying capacity The concept of how much traffic (space debris, satellites, and other space assets) a particular orbit can safely hold (below a certain threshold) to avoid over-crowding and collisions
OTS Outer Space Treaty
PCA Permanent Court of Arbitration
PCJ Permanent Court of International Justice
Res. Resolution
ROSCOSMOS Roscosmos State Corporation for Space Activities
SETI Search for Extraterrestrial Intelligence
Sounding rocket An instrument-carrying rocket designed to take measurements and perform scientific experiments during its sub-orbital flight
SSA Space Situational Awareness
STM Space Traffic Management
UN United Nations
UNCOPUS United Nations Committee on the Peaceful Uses of Outer Space
UNCLO United Nations Convention on the Law of the Sea
UNGA United Nations General Assembly
UNIDROIT International Institute for the Unification of Private Law
UNOOSA United Nations Office for Outer Space Affairs
VCLT Vienna Convention on the Law of Treaties
WIPO World Intellectual Property Organization
WRC World Radiocommunication Conference
WTO World Trade Organization