What was required to obtain a visible-light image of the surface of Venus?
A)building a bigger visible-light Earth-based telescope
B)sending a visible-light telescope into orbit around Venus
C)sending an unmanned lander to the surface of Venus
D)sending a manned lander to the surface of Venus

Question

Quizplus · Accepted Answer

Venus's thick atmosphere, composed mainly of carbon dioxide with clouds of sulfuric acid, makes it impossible to obtain visible-light images of its surface from space. The surface can only be imaged directly by landing a probe on the planet, as was done by the Soviet Venera missions in the 1970s and 1980s. These missions provided the first—and so far, the only—images of the Venusian surface in visible light.

What Was Required to Obtain a Visible-Light Image of the Surface