LDEF (Long Duration Exposure Facility)
LDEF was designed to provide long-term data on the space environment, including micrometeoroid and radiation bombardment, and its effects on materials and satellite systems (including power, propulsion, and optics), and the survivability of microorganisms in space. The mission's experiments included participation of more than 200 principal investigators from 33 private companies, 21 universities, seven NASA centers, nine Department of Defense laboratories, and eight foreign countries. Its planned retrieval was temporarily postponed in March 1985, and then indefinitely postponed following the Challenger disaster in 1986. Finally, it was brought back to Earth by STS-32 in January 1990. Many of the experiments benefited from their extended stay in space; in particular, it was found that many of the microorganisms onboard had survived, shielded beneath a later or two of dead cells.
Related categories SATELLITES AND SPACE PROBES
SPACE AND AEROSPACE MEDICINE
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