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Radar is the device that detects tissues and this expansion rate, bearing and distance away from the uses of radio waves.

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The rocket is the name given to the engine that produces thrust due to the combustion process, as in a mechanically weighted jet housing, but does not require a forced air intake from the environment while doing this.

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The telescope is a rasterhane device used by astronomers that receives and displays all kinds of radiation from space.

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smaller celestial body that, remaining in the gravity of a celestial body, orbits next to it and rotates with it near the Sun.Satellites are divided into artificial and natural.

1. Natural satellite:Natural satellite, in most common usage, is an astronomical object orbiting a planet, dwarf planet, or minor Solar System. Earth's satellite is the moon.

2. Artifical satellite:Artificial satellites are satellites that humans have developed and placed in orbit of the Earth or other planets. These satellites are usually computer-controlled systems.

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Unmanned aerial vehicle is a type of flying vehicle that does not physically involve humans. controlled by remote control.

1. Dron:It has 3 or more propellers. These are called xcopter(tricopter, quadcopter, hexacopter). They get the lift needed to fly from the engines.

2. Fixed-wing UAV:They provide the lift needed to fly from the wings. they are like airplanes. motors provide forward motion

3. Vtol:(Vertical take off and landing)Fixed-wing aircraft capable of taking off and landing vertically. A mix of drone and fixed-wing UAV.