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I’m Steve Ember.

And I’m Barbara Klein with EXPLORATIONS in VOA Special English. Today we tell about a program in the nineteen sixties to train women as astronauts. Today they are known as the Mercury 13. They never reached their goal of spaceflight. But they led the way for other American women to travel into space.

In nineteen fifty-nine the United States was involved in a space race with the former Soviet Union. The Soviets had surprised the world by launching the first satellite. Sputnik One was launched into orbit on October fourth, nineteen fifty-seven. Suddenly, the United States appeared to be behind in an important area of technology.

As a result, President Dwight Eisenhower formed the National Aeronautics and Space Administration in nineteen fifty-eight.

By April seventh, nineteen fifty-nine NASA introduced the first American astronauts. They were Scott Carpenter, Gordon Cooper, John Glenn, Virgil Grissom, Walter Shirra, Alan Shepard and Donald Slayton. They were known as the Mercury Seven.

In the fall of that year, William Randolph Lovelace was attending a meeting of the Air Force Association in Miami, Florida. Doctor Lovelace was deeply involved in the effort to put Americans into space. He served on NASA's Special Committee on Life Sciences. Astronaut candidates had been put through tests at his medical center in Albuquerque, New Mexico.

Doctor Lovelace and Air Force Brigadier General Donald Flickinger wondered if women could be trained as astronauts. General Flickinger had designed the space flight tests for the astronaut candidates. He also knew that the Russians had plans to launch a woman into space.

The two men met with Jerrie Cobb, a twenty-eight year-old pilot. They thought Miz Cobb would make a good female astronaut candidate. They invited her to Doctor Lovelace's medical research center in Albuquerque for tests.

Jerrie Cobb went to Doctor Lovelace's medical center in February of nineteen sixty. She spent one week receiving the same series of tests that the Mercury Seven astronauts faced.

The tests included a general physical examination and X-rays. Some tests involved electric shock. Other tests pushed the body to its physical limits. Yet another test required freezing the inner ear with ice water to test for the condition of vertigo. The doctors also measured brain waves. They performed a total of seventy-five tests on Jerrie Cobb.

Jerrie Cobb had one unusual test on a machine called the Multi-Axis Space Test Inertia Facility, or MASTIF. The MASTIF was in NASA's Lewis Research Center in Cleveland, Ohio. This special machine could move a person in three different directions almost at the same time. It was designed to test a pilot's ability to control a spacecraft under severe conditions. Jerrie Cobb passed the test.

During her tests, Jerrie Cobb knew that if she failed the first level of astronaut training no other women would be tested. By August, the results of the tests were complete. Doctor Lovelace was fully satisfied that Jerrie Cobb had scored similarly to the Mercury Seven astronauts. He even noted that Miz Cobb required less oxygen than the average male astronaut. Jerrie Cobb's success meant that more female candidates were needed for more tests.

Jerrie Cobb helped Doctor Lovelace and General Flickinger chose female astronaut candidates. She searched among members of the international woman's aviation group, the Ninety-Nines, based in Oklahoma City, Oklahoma.

Miz Cobb worked hard to develop a list of good candidates by August, nineteen sixty-one. Twenty-five other women pilots were chosen and tested at Doctor Lovelace's research center. Candidates had to have flown an airplane for more than one thousand hours. Generally, they were required to be in their early thirties. And they had to be in good physical health.

Not all the women invited to Albuquerque passed Doctor Lovelace's tests. After the first level of testing only thirteen remained, including Jerrie Cobb. The youngest among them was twenty-one-year-old Wally Funk who was also a competitive skier. Forty-year-old Jane Hart was the oldest. She was married to Senator Philip Hart of Michigan. She also flew helicopters.

Other members of the group were Myrtle Cagle, twin sisters Jan and Marion Dietrich, Jean Hixson and Gene Nora Stumbough Jessen. Also included were Irene Leverton, Bernice Steadman, Sara Gorelick Ratley, Jerri Sloan Truhill and Rhea Hurrle Woltman.

These women would be known as the Mercury 13. They had passed the first level of tests that the Mercury Seven astronauts faced. They now wanted to progress to the next level.

Not all the Mercury 13 women took the next level of testing. For the Mercury Seven male astronauts, psychological and space flight testing took place at Wright-Patterson Air Force Base in Dayton, Ohio. However, NASA would not permit testing to be done on the women at that base.

Only Jerrie Cobb, Wally Funk and Rhea Woltman would receive special psychiatric testing for space fitness in Oklahoma City.

At the same time, Doctor Lovelace began plans for flight training the candidates. The United States Naval School of Aviation Medicine agreed to test Jerrie Cobb for ten days in Pensacola, Florida.

Jerrie Cobb passed a series of tests meant for Navy pilots and astronauts. She would be the only one of the Mercury 13 to successfully complete all the tests that Mercury Seven astronauts took. She would also be the only one who had the chance to do so.

Doctor Lovelace had made plans to test the other women in the group at Pensacola. After a delay, September eighteenth was chosen as the day for flight-testing to begin. But it never took place. The women received telegram messages saying the tests had been cancelled four days before they were to begin.

The Navy wanted NASA to approve the training. NASA resisted the idea. Jerrie Cobb and Jane Hart immediately tried to get the testing restarted. Their efforts led to a committee hearing in Congress. But the women found little support.

Astronaut John Glenn spoke to the committee. He said: "The fact that women are not in this field is a fact of our social order." Glenn later said that he would not oppose a female astronaut program. But he saw no requirement for one.

After two days of hearings, members of Congress had heard enough. They would do nothing to change NASA's decision not to train women for spaceflight.

But the answer about women in space came less than one year after those congressional hearings. On June sixteenth, nineteen sixty-three, Russian cosmonaut Valentina Tereshkova became the first woman in space. She orbited the Earth forty-eight times and spent almost three days in space.

The Mercury 13 women were never officially part of the NASA space program. But their willingness to undergo testing to be astronauts and their performance in those tests showed that women could go into space.

It was not until nineteen eighty-three that Sally Ride became the first American woman in space. Sixteen years later, Eileen Collins became the first woman to command a space shuttle mission. She invited the surviving members of the Mercury 13 to attend the launch. Seven women were able to attend.

On May twelfth, two thousand seven, the University of Wisconsin-Oshkosh also honored these women. The university gave honorary doctor of science degrees to the eight surviving members of the Mercury 13. The university said it was honoring the spirit and efforts of this special group of women.

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（來源：VOA 編輯：Julie）