Satellites - National Air and Space Museum
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 satellites—human-made machines and spacecraft in orbit …
Ariel 1 Satellite | National Air and Space Museum
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 (GSFC) and carried six British experiments designed to study the ionosphere and its relationship to solar radiation, including cosmic ray, solar emission and ...
Communications Satellites | National Air and Space Museum
In 1958, President Dwight D. Eisenhower used SCORE—the first communication satellite—to broadcast a Christmas message: "Through this unique means I convey to you and all mankind, America's wish for peace on Earth and goodwill toward men everywhere." The SCORE (Signal Communications by Orbital Relay Equipment) satellite operated for 35 days.
Military Reconnaissance | National Air and Space Museum
The Predator can provide near real-time reconnaissance using a satellite data link system and perform attack missions as well. The Museum's Predator was one of the first three UAVs to fly operational missions over Afghanistan after the 9/11 terrorist attacks.
Communications Satellite, Oscar I - National Air and Space Museum
During that time, thousands of radio operators in 28 different countries detected the satellite's simple "hi-hi" morse code message. OSCAR 1 marked the beginning of a program that continues to this day, under the auspices of the Radio Amateur Satellite Corporation (known officially as AMSAT) which operates approximately 20 OSCAR satellites as ...
Telstar and the World of 1962 | National Air and Space Museum
2012年7月23日 · Last week, the Museum recognized the 50th anniversary of Telstar, the first “active” satellite (one that can receive a radio signal from a ground station and then immediately re-transmit it to another) and the first technology of any kind that enabled transatlantic television transmissions. In 1962, both accomplishments generated intense interest, excitement, and …
What are the Main Parts of a Communications Satellite?
Most communications satellites have the same basic components, pointed out in this diagram: Solar cells and batteries to power the satellite systems Antennas to receive and transmit signals Transponder to alter the frequency of incoming signals (avoiding interference with outgoing signals) and to amplify signals before transmitting them back to Earth Orientation and …
Satellite, Communications, Sirius FM-4 - National Air and Space …
This satellite represents the first generation of space-based, commercial radio service developed by Sirius Radio, a U.S. company (now Sirius XM Radio). Designed in 1987 and initiating service in 2001, the Sirius satellite system consisted of three satellites that provided more than 150 digital music and audio channels to North America.
What Can You Really See From Space?
2011年4月8日 · In reality, satellite imagery is used for "before" and "after" images. These can be used for research purposes and for responses to emergencies. Recently media outlets widely used imagery from the GeoEye-1 satellite to show tsunami devastation in Japan. Sometimes a satellite passes overhead at just the right time to capture a rapid change.
Communications Satellite, Telstar - National Air and Space Museum
The United States chose government direction and created two new institutions, COMSAT and INTELSAT, to develop satellite communcations, an arrangement that lasted for more than two decades. This Telstar is a backup spacecraft to Telstar 1 and 2 (launched respectively in 1962 and 1963), transferred from the National Museum of American History to ...