James Tillman ’58, SM ’61, began designing instruments to study Martian weather as an MIT student. When NASA decided to shut down the Viking mission after two years, he wouldn’t hear of it.

James Tillman ’58, SM ’61, began designing instruments to study Martian weather as an MIT student. When NASA decided to shut down the Viking mission after two years, he wouldn’t…

A half-century after the Viking landers touched down on the Red Planet, the debate over whether they found signs of life continues.