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A satellite or artificial satellite [a] is an object, typically a spacecraft, placed into orbit around a celestial body. Satellites have a variety of uses, including communication relay, weather forecasting, navigation ( GPS ), broadcasting, scientific research, and Earth observation.
An artificial satellite is an object that people have made and launched into orbit using rockets. There are currently over 3,000 active satellites orbiting the Earth. The size, altitude and design of a satellite depend on its purpose.
Jun 6, 2022 · The tin cans we think of as satellites are actually artificial (human-built) satellites that move in precisely calculated paths, circular or elliptical (oval), at various distances from Earth, usually well outside its atmosphere.
Dec 2, 2009 · Artificial satellites are human-built objects orbiting the Earth and other planets in the Solar System. This is different from the natural satellites, or moons, that orbit planets, dwarf...
Jul 9, 2024 · A satellite is anything that orbits a planet or a star. Earth is a satellite orbiting the Sun. The Moon is a satellite orbiting Earth. When you launch a spacecraft into orbit around Earth, that’s a satellite, too. This kind of satellite can help us learn about Earth and the universe.
Jan 17, 2022 · There are two kinds of satellites: natural (such as the moon orbiting the Earth) or artificial (such as the International Space Station orbiting the Earth). There are dozens upon dozens of...
Jul 3, 2024 · Satellites are used to study the many celestial bodies in the solar system. To date, artificial satellites have orbited many significant planets and moons in our solar system, as well as numerous smaller objects like dwarf planets, asteroids and comets.
Jul 8, 2024 · Earth satellite, artificial object launched into a temporary or permanent orbit around Earth. Spacecraft of this type may be either crewed or uncrewed, the latter being the most common.
May 17, 2018 · artificial satellite [1], object constructed by humans and placed in orbit around the earth or other celestial body (see also space probe [2]). The satellite is lifted from the earth's surface by a rocket [3] and, once placed in orbit, maintains its motion without further rocket propulsion.
In 1957 a major event marked the beginning of a new era in Earth Observation: the first artificial satellite (Sputnik) was launched by the Soviet Union. In astronomy, a satellite will be understood as a celestial body orbiting around a planet or another celestial body (a moon).
