The Planetary Report • May/June 1985


On the Cover: This radar image, obtained by the Arecibo Radio Observatory, shows the large highland region on Venus called Ishtar Terra. Blue indicates smooth areas, while yellow and red areas are rough. Maxwell Montes, the bright area in the bottom left (east), is the highest area on Venus. Freyja Montes (center right, or north) and Akna Montes (center top, or west) are similar, but smaller mountainous areas. The large, dark blue area in the center is Lakshmi Planum, a high smooth plateau. (The curve along the right of the image is the edge of the data, not the limb of the planet).


4 Detour to a Comet: Journey of the International Cometary Explorer: Robert Farquhar tells the tale of how we're going to visit Comet Giacobini-Zinner.

7 Weapons in Space: Implications for the Civil Uses of Space: A panel of experts at a Society-sponsored symposium weigh in.

10 Investigating Venus: Arecibo Radar Maps the Planet: James W. Head captions stunning new radar images of the surface of Venus.


3 I. S. Shklovskii, 1916–1985 Carl Sagan pays tribute.

13 World Watch Vega balloon tests; Soviet-U.S. cooperation in Mars exploration.

14 News & Reviews Missing the mark; the comet deluge.

15 Society Notes Solar system environment, the view from space, and humans on Mars.

16 You Tell Us Results from The Planetary Society members' survey.

The Planetary Report • May/June 1985

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