In 1957, Vanguard TV3 rose about 4 feet before its rocket exploded; the 3-pound satellite was thrown clear, recovered, and now sits in the Smithsonian's Air and Space Museum
In 1957, an American satellite launch ended in disaster when the rocket exploded on the launchpad. The salvaged satellite ultimately became a museum exhibit. This setback propelled the establishment of NASA, leading to a successful subsequent laun...

The 4-foot flight that changed America's space program. Image Credits: NASA via Wikimedia Commons
A bad week to be American
To appreciate the significance of this particular launch, it is necessary to trace back to October 1957 when the Soviet Union had just launched Sputnik, the very first artificial satellite to be placed into orbit, followed soon afterward by Sputnik 2 that carried a dog. The US government was unprepared. Both nations were racing to launch a satellite during the International Geophysical Year, an international scientific project. America had two competing programs trying to get there first. One used a modified missile, the Jupiter-C. The other rocket, the three-stage Vanguard, run by the U.S. Naval Research Laboratory and funded by the National Science Foundation, was backed by the Eisenhower administration, which wanted a civilian-led effort. As Sputnik was already orbiting the planet, the pressure to do something was immense.

On December 6, the US made its move. Its target was tiny compared with most satellites: no more than 6 inches in diameter and 3 pounds in weight, not much larger than a grapefruit. Vanguard Test Vehicle 3 rose to an altitude of only about 4 feet, roughly two seconds after ignition, before a drop in fuel tank pressure let combustion gases leak back through the engine's injector, causing the rocket to lose thrust and fall back onto the launch pad, where it exploded. And it all happened in just a few seconds. Newspapers didn't mince words and called it "Flopnik" and "Kaputnik," as a dig at the Soviets' success.
Here's the twist most retellings skip. The small satellite was not actually destroyed by the explosion. The satellite was thrown free of the explosion and recovered from the launch site, though it was too damaged to fly again. A separate account from the Smithsonian's National Air and Space Museum adds that the satellite was retrieved from the wreckage "damaged but intact and apparently still functioning." Both onboard radio transmitters, powered by battery or solar power, were still connected when the satellite was retrieved.
How a launchpad disaster ended up in a museum
For years, the damaged satellite remained with Dr. John P. Hagen, who had run the Vanguard project. The Smithsonian object record says Hagen presented the artifact to the National Air and Space Museum in 1971 on behalf of himself and NASA, and the museum formally acquired it that May. The same record says that when the museum opened in 1976, the satellite’s two damaged halves were wired back together and placed in a giant “Uncle Sam” hand at the entrance to the Apollo gallery, symbolizing America’s response to Sputnik. It has been on display ever since, a constant physical reminder of the moment when the US realized that it was behind in the space race.

Failure, it turns out, has a way of forcing progress. NASA’s history says the disaster, along with interservice competition over space technology, helped lead the government to create a single civilian space agency in 1958: NASA. Just over three months after the explosion, on March 17, 1958, an almost identical satellite called Vanguard 1 finally made it to orbit. It was not only successful but also brought the amazing discovery into science. By observing small changes in Vanguard 1’s trajectory, scientists concluded that Earth is not perfectly round. A 1959 study titled 'Vanguard Measurements Give Pear-Shaped Component of Earth's Figure,' published in the journal Science by NASA researchers John O'Keefe, Ann Eckels, and R. K. Squires, found that the planet was subtly asymmetrical, bulging slightly in the southern hemisphere. The scientists called the finding the “pear-shaped Earth,” and it was one of the earliest scientific discoveries of the space age. Vanguard 1 is still up there today. Communication with the object was lost in 1964, but NASA's history confirms that it continues to be the oldest man-made satellite in space, orbiting our planet for over six decades since the failure of its predecessor.
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