Friday, August 17, 2012

Past Imperfect: Starfish Prime


[ed. I remember this, standing on a high hillside watching strange clouds and colors bloom on the horizon. How many people can say they've seen a thermonuclear blast fired first hand?]

The first Starfish Prime launch, on June 20, 1962, at Johnston Island in the Pacific, had to be aborted when the Thor launch vehicle failed and the missile began to break apart. The nuclear warhead was destroyed mid-flight, and radioactive contamination rained back down on the island.

Despite protests from Tokyo to London to Moscow citing “the world’s violent opposition” to the July 9 test, the Honolulu Advertiser carried no ominous portent with its headline, “N-Blast Tonight May Be Dazzling; Good View Likely,” and hotels in Hawaii held rooftop parties.

The mood on the other side of the planet was somewhat darker. In London, England, 300 British citizens demonstrated outside the United States Embassy, chanting “No More Tests!” and scuffling with police. Canon L. John Collins of St. Paul’s Cathedral called the test “an evil thing,” and said those responsible were “stupid fools.” Izvestia, the Soviet newspaper, carried the headline, “Crime of American Atom-mongers: United States Carries Out Nuclear Explosion in Space.”

Soviet film director Sergei Yutkevich told the paper, “We know with whom we are dealing: yet we hoped, until the last moment, that the conscience, if not the wisdom, of the American atom-mongers would hear the angry voices of millions and millions of ordinary people of the earth, the voices of mothers and scientists of their own country.” (Just eight months before, the Soviets tested the Tsar Bomba, the most powerful nuclear weapon ever detonated—a 50-megaton hydrogen bomb—on an archipelago in the Arctic Ocean in the north of Russia.)

Just after 11 p.m. Honolulu time on July 9, the 1.45-megaton hydrogen bomb was detonated thirteen minutes after launch. Almost immediately, an electromagnetic pulse knocked out electrical service in Hawaii, nearly 1,000 miles away. Telephone service was disrupted, streetlights were down and burglar alarms were set off by a pulse that was much larger than scientists expected.

Suddenly, the sky above the Pacific was illuminated by bright auroral phenomena. “For three minutes after the blast,” one reporter in Honolulu wrote, “the moon was centered in a sky partly blood-red and partly pink. Clouds appeared as dark silhouettes against the lighted sky.” Another witness said, “A brilliant white flash burned through the clouds rapidly changing to an expanding green ball of irradiance extending into the clear sky above the overcast.” Others as far away as the Fiji Islands—2,000 miles from Johnston Island—described the light show as “breathtaking.”

In Maui, a woman observed auroral lights that lasted a half hour in “a steady display, not pulsating or flickering, taking the shape of a gigantic V and shading from yellow at the start to dull red, then to icy blue and finally to white.”

by The Smithsonian |  Read more:
Photo: Los Alamos National Laboratory