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 …

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 …

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

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 …

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.

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, …

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 …

Oct 3, 2017 · Sputnik, the world’s first human-made satellite of the Earth, was launched on October 4, 1957, marking the beginning of the Space Age and the modern world in which we …