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U.S. Considered A-Bomb on Moon
Updated 7:32 PM ET May 17, 2000
By The Associated Press
The United States considered detonating an atom bomb on the moon during the late 1950s
as a demonstration of the nation's Cold War might, a Chicago physicist says.
The secret project, innocuously titled "A Study of Lunar Research Flights," was never
carried out. But its planning included calculations by the astronomer Carl Sagan - then a
young graduate student - of the behavior of the dust and gas generated by the blast.
Viewing the nuclear flash from Earth might have intimidated the Soviet Union and boosted
Americans' confidence after the launch of Sputnik, physicist Leonard Reiffel said
Wednesday. He directed the inquiry at the former Armour Research Foundation, now part
of the Illinois Institute of Technology.
"Now it seems ridiculous and unthinkable," said Reiffel, 72, who later served as a deputy
director at NASA during the Apollo program. "But things were remarkably tense back
then."
Sagan went on to become a worldwide celebrity for popularizing science on television. He
died in 1996.
Reiffel described the plan in a letter in the May 4 issue of the scientific journal Nature.
Nature published a review of two new Sagan biographies. The author of one of the books
suggested that Sagan breached security in 1959 by revealing the classified project in an
application for an academic fellowship. Reiffel concurred that Sagan probably released
classified information.
The exchange in the scientific journal inadvertently shines a spotlight on a period when
science in the United States was greatly influenced by Cold War politics.
The U.S. space program was sputtering while the Soviet Union had launched Sputnik and
a pair of lunar probes.
The Eisenhower administration considered the lunar blast as a way to reassure Americans
that the Soviet threat could be countered, while demonstrating to the Kremlin that the
United States had an effective nuclear deterrent.
Under the scenario, a missile carrying a small nuclear device was to be launched from an
undisclosed location and travel 238,000 miles to the moon, where it would be detonated
upon impact. The planners decided it would have to be an atom bomb because a hydrogen
bomb would have been too heavy for the missile.
Reiffel said the nation's young space program probably could have carried out the mission
by 1959, when the Air Force deployed intercontinental ballistic missiles.
Military officials apparently abandoned the idea because of the danger to people on Earth
in case of a failure. The scientists also registered concerns about contaminating the moon
with radioactive material, Reiffel said.
The Air Force has declined to comment on the project, pending a review of historical
records.
"There was lots of talk on the part of the Air Force about the moon being `military high
ground,"' Reiffel said.
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