A satellite is an object that is in orbit around an object in space of a larger size. Things such as the Earth's Moon or Pluto's Charon are natural satellites. Humans have also created artificial …

C'est quoi un satellite ? GRANDES QUESTIONS C'est un objet qui tourne autour d'une planète. Il peut tourner autour de la Terre … ou d'une autre planète ! La Lune est le seul satellite naturel …

Learn about how a communications satellite works and how it helps us to connect to each other around the world.

In the tense years of the Cold War, applications satellites evolved down two separate paths: one devoted to national security needs, the other to civilian interests.

Telstar, launched in 1962, was the first active communications satellite: it received microwave signals from ground stations and retransmitted them across vast distances back to Earth.

Military reconnaissance is an operation to obtain information relating to the activities, resources, or military forces of a foreign nation or armed group. It uses balloons, aviation, and space …

AT&T used the satellite to test basic features of communications via space, including the feasibility of transmitting telephone and television signals and the effect of Van Allen belt …

This is the recovered return capsule of Biosatellite 2, one of several National Aeronautics and Space Administration (NASA) satellites designed to investigate the influence of space flight on …

The satellite is displayed in the Milestones of Flight Gallery at NASM. Explorer-1 was the United States' first successful orbiting satellite. Following the failure of Vanguard in December 1957, …

A natural satellite is a naturally occurring object that is in orbit around an object in space of a larger size. Earth's natural satellite is the Moon, but many objects in our Solar System have …