AUTEUR: Fernand Verger
NOM DE FICHIER: The Cambridge encyclopedia of space - Missions, applications and exploration.pdf
DATE DE PUBLICATION: 2003-Jan-01
TAILLE DU FICHIER: 9,64 MB
Space exploration - Space exploration - Space applications: Space visionaries in the early 20th century recognized that putting satellites into orbit could furnish direct and tangible benefits to people on Earth. For example, Arthur C. Clarke in 1945 described a way in which three satellites in orbit about 35,800 km (22,250 miles) above the Equator could relay communications around the globe.
exploration definition: 1. the activity of searching and finding out about something: 2. the activity of searching and…. Learn more.