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The Planetary Report • September/October 1986

Venus by Radar

On the Cover: The thick, sulfuric-acid clouds of Venus hide its surface from conventional imaging techniques. Scientists have turned to cloud-piercing radar to "see" through to the surface. Soviet Venera and U.S. Pioneer orbiters returned radar data that scientists have compiled into images and maps of the planet's surface. Earth-based radar systems, such as the Arecibo Radio Telescope in Puerto Rico, can also be used to study Venus. Here is an Arecibo image of a region southeast of Lakshmi Planum in the northern hemisphere. Purples and blues represent smooth areas, while greens and yellows are rougher areas.
Donal Campbell, Arecibo Observatory and Paul Fisher, Brown University

Features

3 A Talk With Thomas O. Paine: Louis Friedman sits down with the Chairman of the President's National Commission on Space.

7 A Time to Act: Louis Friedman presents an editorial on how we got where we are, and where we're going.

8 New Results from Venera 15 and 16: N. A. Armand, V. L. Barsukov, and A. T. Basilevsky showcase exciting new results from Venus.

11 The Stars Our Destination? The Feasibility of Interstellar Travel: Robert L. Forward looks at the options for traveling beyond our solar system.

Departments

10 News & Reviews NASA decisions, past and future.

27 Society Notes Volunteer network, the New Millennium Committee, and Halley's Comet.

astronaut on Phobos
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