Complex sentence: They were developed by the Instituto Nacional de Técnica Aeroespacial (National Institute for Technical Aeronautics) and the European Space Agency now belongs to Eutelsat (27.69%) and other private shareholders from Spain.
Split into simpler sentences: They were developed by the Instituto Nacional de Técnica Aeroespacial (National Institute for Technical Aeronautics) and the European Space Agency. It now belongs to Eutelsat (27.69%) and other private shareholders from Spain.