1 ene 1995 año - google earth/ today's tech/ GPS
Descripción:
The Global Positioning System (GPS) is a network of about 30 satellites orbiting the Earth at an altitude of 20,000 km. Once it has information on how far away at least three satellites are, your GPS receiver can pinpoint your location using a process called trilateration.Añadido al timeline:
fecha:
1 ene 1995 año
Ahora mismo
~ 29 years ago
