How have we been able to construct detailed maps of surface features on Venus?

Question

Quizplus · Accepted Answer

Detailed maps of surface features on Venus have been constructed by using radar from spacecraft that were sent to orbit Venus. As Venus is covered by thick clouds, optical telescopes cannot penetrate through them to the Venusian surface. Therefore, radar instruments on spacecraft have been used to penetrate through the thick clouds and bounce radio waves from the surface back to the spacecraft, allowing scientists to create detailed maps of Venus's surface.

How Have We Been Able to Construct Detailed Maps of Surface