[[http://www.esa.int/esaCP/Spain.html| Missions espacials ESA]]
[[http://www.estacionespacial.com/|estacio espacial internacional]]
[[http://www.nasa.gov/about/highlights/En_Espanol.html| NASA]]
[[http://science.nasa.gov/Realtime/JTrack/3D/JTrack3D.html|satelĀ·lits en directe]]