15¢ Viking Missions
Issue Date: July 20, 1978
City: Hampton, VA
Printed By: Bureau of Engraving and Printing
Printing Method: Lithographed, engraved
U.S. #1759 honors the second anniversary of the successful landing of Viking 1 on Mars.
The Viking I and II spacecraft, launched in August and September 1975, respectively, each traveled for a year, making 440-million-mile journeys to the “Red Planet.” The Viking Landers transmitted images of the planet’s surface, collected surface samples, studied the atmosphere and weather, and deployed seismometers to detect earthquakes. Both Viking spacecraft were considered extremely successful.