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 …
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.
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 ...
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.
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.
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 …
Finding the Alphabet from Space - National Air and Space Museum
2018年1月8日 · There's a tradeoff between how much coverage a sensor gets and the resolution of the observations, so what scientists really need is a combination of satellite data and data from the ground (or aircraft) to study these issues on a global scale. What inspired you to start looking for the alphabet in satellite images? It was really just a whim.
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 …
Venus | National Air and Space Museum
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 multiple natural satellites.
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 ...