In 1959, Able and Baker survived a 300-mile Jupiter rocket flight; Able died during surgery four days later, while Baker lived to 27

On May 28, 1959, an Army Ballistic Missile Agency Jupiter missile lifted two animals 300 miles above Earth. It returned them alive, marking the first successful animal recovery for the American space program, after a squirrel monkey named Gordo had died on splashdown five months earlier when his capsule's flotation gear failed, according to the Smithsonian's National Air and Space Museum. Records show that Able, a rhesus monkey, and Baker, a squirrel monkey, rode the nose cone of that rocket as part of a Department of Defense biomedical experiment involving the Army Medical Research and Development Command and the U.S. Navy School of Aviation Medicine, which trained Baker, and were recovered in good condition after splashdown. That bit of the story often appears in space trivia. The part that follows is often left out. It shows how two successful test subjects can end up very differently once the cameras stop recording.

Why NASA needed two monkeys to prove a point

Before any American entered a capsule, scientists did not know whether a living body could survive launch, weightlessness, and reentry. Rockets before Able and Baker had already killed many animals when they hit the ground or were recovered. So the mission had one task: show that a monkey could make the trip and walk away. The mission worked. Both monkeys handled the acceleration, weightlessness, and return to Earth without any signs of injury. Smithsonian records confirm both animals were in good condition after the flight, a major success for the program that hoped to send people someday.

The part of the story that gets skipped over

Able did not die during the flight. She died four days later, during surgery to remove an implanted electrode. Doctors were removing an electrode implanted under her skin to monitor her vital signs during the mission. During that surgery, she had a reaction to the anesthesia and did not survive. The Smithsonian National Air and Space Museum confirms that Able died four days after the flight from a reaction to the anesthetic used during the electrode-removal surgery. It is a detail that quick retellings often leave out because "she survived space but died in surgery" is a harder headline to sell than "monkey goes to space and lives."

What happened to Baker after the mission

Baker did not disappear into obscurity. Instead, she became a celebrity. NASA writes that Baker died of kidney failure in 1984 at the age of 27. That is a long life for a squirrel monkey, which typically lives less than 20 years in captivity. In 1971, she moved to what is now called the U.S. Space and Rocket Center in Huntsville, Alabama. There, she spent the rest of her life as a kind of public figure, receiving letters from fans. The National Archives has preserved the actual 1959 ASPCA certificate given to her, which reads that Baker, "along with her simian companion Able, was one of two American pioneers to travel 300 miles into outer space, thus blazing the trail for human beings who will follow." The award was presented on June 29, 1959, about a month after the flight. That is an afterlife for an animal that spent only sixteen minutes in the nose cone of a missile. Baker is buried at the Space and Rocket Center. Visitors still leave bananas on Baker's grave.

Why this pairing still matters decades later

Able and Baker were not the first animals the United States sent into space, but they were the first American animals recovered alive from spaceflight. That came two years before Alan Shepard's suborbital flight in 1961. Their stories show something about those early days of spaceflight. The story is often simplified into one success, but the full account is more complicated. One monkey survived the mission but did not survive what came after. The other lived past the headlines and became a symbol of an era in space history.

The takeaway for anyone retelling this story

If you bring up Able and Baker at a dinner party or in a classroom, skip the version that says they "survived." The full story is more complicated. One monkey came home from space, only to die on an operating table days later. The other came home, moved to Alabama, received fan mail from schoolchildren, and lived to 27.