Join Donate

The Planetary Report • January/February 1983

Martian Rivers

On the Cover: Viking Orbiter images suggest that rivers may have once flowed on Mars. Erosive features such as scour marks and teardrop-shaped islands, seen in this section of the Kasei Vallis channel, indicate sculpting by liquid water. The impact crater at the bend of the channel is 25 km across.


4 The Ancient Rivers of Mars: David Pieri takes us on a tour of the signs of ancient rivers flowing across the surface of Mars in Viking Orbiter images.

9 Io's Volcanic Plumes: Alfred S. McEwen and Laurence A. Soderblom showcase the stunning plumes of Io observed by the Voyager spacecraft.


12 News & Reviews Volcanic eruptions; astronomy and creationism.

13 Washington Watch Effects of the 1982 election on the space committees in Congress.

14 Society Notes The Planetary Society goes international.

astronaut on Phobos
Let's Change the World

Become a member of The Planetary Society and together we will create the future of space exploration.

Join Today

Every Mission Counts

Take action today and your gift will go twice as far to increase NASA budgets and advance space priorities.


You are here: