Why do astronomers build radio telescopes?
A)Radio waves give a different view of the universe.
B)Radio waves from space reach the Earth's surface.
C)Radio telescopes can detect signals from aliens.
D)Radio telescopes can be much larger than optical telescopes.

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The Answer of Why do astronomers build radio telescopes?
A)Radio waves give a different view of the universe.
B)Radio waves from space reach the Earth's surface.
C)Radio telescopes can detect signals from aliens.
D)Radio telescopes can be much larger than optical telescopes.

Why Do Astronomers Build Radio Telescopes