Apr 12, 2022 · 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 …

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.

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.

Apr 8, 2011 · Most people know that satellites in orbit do useful things such as collect images of the Earth's surface. At the National Air and Space Museum I use satellite images in my job to …

This satellite is the heart of a space-based communications system called Iridium. Conceived, designed, and built by Motorola, the Iridium system provides wireless, mobile communications …

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 …

Jul 11, 2023 · The recent launch of VA261 closes out the Ariane 5 rocket’s 117 launches. Take a look back at Europe’s workhorse launcher and the next generation in Ariane 6.

Jul 31, 2025 · On October 4, 1957, the Soviet Union launched the first artificial satellite, Sputnik 1, into low Earth orbit. This event signaled to many the beginning of a space race between the …

Aug 23, 2023 · Before Kennedy’s call to send a man to the Moon, the early years of the Space Race marked successes through headline making “firsts”: the first satellite, the first man in …