What was the main technique used to study the solid surface of Venus?
A) visible-light telescopes
B) small rovers that drive around on the planet
C) photographs taken at different times of the day
D) radar images
E) none of these

Question

Quizplus · Accepted Answer

The main technique used to study the solid surface of Venus has been through radar images. Due to Venus's thick cloud cover, visible light and conventional photography are ineffective for surface study. Radar allows scientists to penetrate the clouds and map the surface.

What Was the Main Technique Used to Study the Solid