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.

This is a replica of Ariel-1 satellite, the world's first internationally conceived and executed satellite. The flight model was designed and built by NASA's Goddard Space Flight Center …

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.

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 …

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, …

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.

To view items in this collection, use the Online Finding Aid In early 1958, a few months after the Soviets launched the first Sputnik, President Eisenhower authorized a top-priority …

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 …