Nasa http://www.hq.nasa.gov

Esa http://www.esrin.esa.it

Cnes http://www.cnes.fr

Inmarsat http://www.inmarsat.org

Intelsat http://www.intelsat.int

Eutelsat http://www.eutelsat.org/home.html

Tps http://www.tps.fr

Canalsatellite http://www.canalsatellite.fr

Astra http://www.aia.lu

DirecTv http://www.directv.com/

Amsc http://www.hughesglobal.com/AMhome.htm

Hns http://www.hns.com

Gilat http://www.gilat.com/gilat/

DirecPC http://www.direcpc.com/index2.html

C : http://www.cpp.fr/webcpp/cadres.html

Astranet http://www.aia.lu/multimedia/index.htm

matra http://www.mgn.fr/satell/intro.htm

ICO http://www.ico.com/

Iridium http://www.iridium.com

Globalstar http://www.globalstar.com

Orbcom http://www.orbcomm.net/

GPS http://www.gps4fun.com/gps_general.html

Teledesic http://www.teledesic.com

Skybridge http://www.skybridgesatellite.com/

Cyberstar http://www.cyberstar.com

Spaceway http://www.spaceway.com

News cnes http://www.france-science.org/lire/usa-espace.html

Communications week http://www.totaltele.com/default.asp?categoryid=625

Via on line www.satellitetoday.com/viaonline

Lloyd’s http://www.ee.surrey.ac.uk/Personal/L.Wood/constellations

Analysys http://www.analysys.com/vlib/satellit.htm

encyclopédie http://www.tbs-satellite.com/tse/online/