JSC Science Note2 12th Chapter Space and Satellite. Jump to Space Surveillance Network – In the context of spaceflight, a satellite is an artificial object which has been intentionally placed into orbit. In 1957 the Soviet Union launched the world’s first artificial satellite, Sputnik 1. Satellites are used for many purposes. A launch vehicle is a rocket that places a satellite into orbit. Satellites are usually semi-independent computer-controlled systems. Satellite subsystems attend many tasks, such as power generation, thermal control, telemetry, attitude control and, orbit control. In the context of spaceflight, a satellite is an artificial object which has been intentionally placed into orbit. Such objects are sometimes called artificial satellites to distinguish them from natural satellites such as Earth’s Moon.
JSC Science Note2 12th Chapter Space and Satellite
A satellite is a body at orbits around another body in space. There are two different types of satellites – natural and man-made. Examples of natural satellites are the Earth and Moon. The Earth rotates around the Sun and the Moon rotates around the Earth. A man-made satellite is a machine that is launched into space and orbits around a body in space. Examples of man-made satellites include the Hubble Space Telescope and the International Space Station. Man-made satellites come in many shapes and size and have different pieces of instruments on them to perform different functions while in space. Satellites are built by engineers and take months sometimes even years to build. The satellites have to endure many tests to make sure the satellite can withstand the launch and the harsh environment of space.
Reflection of light refers to the phenomenon in which a beam of light, when incident on a surface, returns into the same medium. There are two types of reflection – regular reflection and irregular or diffused reflection. When light is reflected, it follows two laws called laws of reflection.
A spherical mirror is obtained by taking a part of a thin hollow sphere of glass or metal. Its reflecting surface is the curved part of a hollow sphere. It can either be concave or convex. The terms that are often used in the study of spherical mirrors are the center of curvature, the radius of curvature, pole, principal axis, focus and, focal length.
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