ROSCOSMOS
NASA
The National Aeronautics and Space Administration is an independent agency of the United States Federal Government responsible for the civilian space program, as well as aeronautics and aerospace research.
JAXA
The Japan Aerospace Exploration Agency (JAXA) (国立研究開発法人宇宙航空研究開発機構 Kokuritsu-kenkyū-kaihatsu-hōjin Uchū Kōkū Kenkyū Kaihatsu Kikō, literally “National Research and Development Agency on Aerospace Research and Development”) is the Japanese national aerospace and space agency.
ISRO
The Indian Space Research Organisation (ISRO, /ˈɪsroʊ/) is the space agency of the Government of India headquartered in the city of Bengaluru. Its vision is to “harness space technology for national development while pursuing space science research and planetary exploration.”
https://www.eusst.eu/
The Space Surveillance and Tracking (SST) Support Framework was established by the European Union in 2014 with the Decision 541/2014/EU of the European Parliament and the Council (SST Decision). This Decision foresaw the creation of an SST Consortium of, initially, five EU Member States – France, Germany, Italy, Spain and United Kingdom – and then eight with the addition of Poland, Portugal and Romania in 2018. SST refers to the capacity to detect, catalogue and predict the movements of space objects orbiting the Earth.
https://eoportal.org
The ESA Earth Observation Portal (eoPortal) aims to open the door to the world of Earth Observation Mission resources. By giving access to a large variety of articles, eoPortal aims to provide a single access point for Earth Observation mission information, resources and services including: Satellite Missions Airborne Sensors
ESA
The European Space Agency (ESA; French: Agence spatiale européenne, ASE;German: Europäische Weltraumorganisation) is an intergovernmental organisation of 22 member states[6] dedicated to the exploration of space. Established in 1975 and headquartered in Paris, France
