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Goddard Space Flight Center


NASA Goddard Space Flight Center’s OTE (optical telescope element) Simulator, or OSIM, is being lowered down into a vacuum chamber (called the Space Environment Simulator, or SES) for testing to withstand the cold temperatures of space. The OTE is known as the eye of the James Webb Space Telescope observatory. OSIM’s job is to generate a beam of light just like the one that the real telescope optics will feed into the actual flight instruments.

Goddard Space Flight Center is home to the nation’s largest organization of combined scientists, engineers and technologists who build spacecraft, instruments, and new technology to study the Earth, the sun, our solar system, and the universe.

Photo courtesy of NASA Goddard/Chris Gunn


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