Astronomers are dialed in for this discovery. Researchers for the first time have tracked a pulsing radio signal in space ...

Waves close wavesVibrations that transfer energy ... be reflected at the boundary between two different materials. The reflection of sound causes echoes. The law of reflection states that: angle ...

They estimated the weights of observed falling stars based on their brightness levels and speeds, and combined the data with the radio wave reflection intensity measured by the MU atmosphere ...

A short pulse of radio waves is transmitted and the time it takes for the reflection (the echo) to return is measured. The distance is calculated using distance = speed x time. As with sonar ...