Orbits Pins and Buttons
Description: Molniya (Russian: Молния; IPA: [ˈmolnʲɪjə] ( listen), "Lightning") was a military communications satellite system used by the Soviet Union. The satellites were placed into highly eccentric elliptical orbits known as Molniya orbits, characterised by an inclination of +63.4 degrees and a period of around 12 hours. Such orbits allowed them to remain visible to sites in polar regions for extended periods, unlike geostationary satellites in geosynchronous orbits with a 24-hour orbital period.[1] The Molniya program was authorized by a government decree in late 1960. The first launch took place on June 4, 1964 and ended in failure when the 8K78 booster core stage lost thrust 287 seconds into launch due to a jammed servo motor. The next...
Description: Nicolaus Copernicus was a Renaissance-era mathematician and astronomer, who formulated a model of the universe that placed the Sun rather than Earth at the center of the universe, in all likelihood independently of Aristarchus of Samos, who had formulated such a model some eighteen centuries earlier. (Source : Wikipedia)
