Question

What is radio and radar astronomy? Please use as simple words as possible.

Answer 1

see this attachment

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Answer 2

Explanation:

Radar(Radio Detection and Ranging)[1][2] is a detection system that uses radio waves to determine the distance (range), angle, or velocity of objects

Radio waves (pulsed or continuous) from the transmitter reflect off the object and return to the receiver, giving information about the object's location and speed.