Question

What is Radio Astronomy?

Answer 1

Radio astronomy is a subfield of astronomy that studies celestial objects at radio frequencies. The first detection of radio waves from an astronomical object was in 1932, when Karl Jansky at Bell Telephone Laboratories observed radiation coming from the Milky Way.

Answer 2

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$\longrightarrow$Radio astronomy is a subfield of astronomy that studies celestial objects at radio frequencies. ... Subsequent observations have identified a number of different sources of radio emission. These include stars and galaxies, as well as entirely new classes of objects, such as radio galaxies, quasars, pulsars, and masers.