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3 days ago · The issue arose nearly as soon as planetary satellites were discovered: Galileo referred to the four main satellites of Jupiter using numbers while the names suggested by his rival Simon Marius gradually gained universal acceptance.
3 days ago · The Apollo program was conceived during the Eisenhower administration in early 1960, as a follow-up to Project Mercury. While the Mercury capsule could support only one astronaut on a limited Earth orbital mission, Apollo would carry three.
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3 days ago · The Soviet program was also responsible for leading the first interplanetary probes to Venus and Mars and made successful soft landings on these planets in the 1960s and 1970s. It put the first space station, Salyut 1, into low Earth orbit in 1971, and the first modular space station, Mir, in 1986.
3 days ago · Once in orbit, the spacecraft was stabilized in a nose-down attitude so that the IR sensors and telemetry antenna were always facing earthward. The satellite was successfully launched into a near polar orbit on October 21, 1961; however, the needles failed to release.
3 days ago · Syncom 3. NSSDCA/COSPAR ID: 1964-047A. Description. Syncom 3 was the first geostationary satellite. (The earlier geosynchronous Syncom 2 had an orbit inclined to the equator.) It was an experimental geosynchronous communications satellite placed over the equator at 180 degrees longitude in the Pacific Ocean.
4 days ago · Description. Molniya 1/ 3 was a first-generation Russian communications satellite (COMSAT) orbited to test and perfect a system of radio communcations and television broadcasting using earth satellites as active transponders and to experiment with the system in practical use.
5 days ago · The Satellite Database archives orbital data of satellites and other space objects in the form of Two-Line Elements. The data is fetched from CelesTrak on an hourly basis. The data can be searched and retrieved using the search form on this website or the API.
