ON THE COVER OF A MAGAZINE

In 1980, 12 plastic petals with a total area of 600,000 m² will unfold in space at a distance of 100,000 km from Earth. The solar wind will fill the sails, and "Heliogiro," a space sailboat, will begin its journey toward Halley's Comet.

Take a look at the fourth page of the issue’s cover. A gyroscope is depicted in the center.

The weather was the biggest concern.