Question

question 9
a group of radio telescopes that work together is called ________.
○ a dispersion
○ a maser
○ a spectrum
○ an array

Explanation:

In astronomy, a set of radio - telescopes working together is known as an array. A dispersion relates to the spreading of light, a maser is a type of amplifier, and a spectrum is a range of wavelengths.

Answer:

D. an array