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Pioneer 4 space probe presentation
Model of the Pioneer 4 space probe in front of a map of its trajectory. Pioneer 4 launched on 3rd March 1959 on a mission to photograph the Moon during a close fly-by. It didn't achieve this goal as a longer than planned burn of the second stage engine set it on a trajectory that was too far from the lunar surface. However Pioneer 4 did become the first US spacecraft to leave Earth's orbit. After passing the Moon, Pioneer 4 went into a heliocentric orbit., by DETLEV VAN RAVENSWAAY/SCIENCE PHOTO LIBRARY
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ID
247587417
Collection
License type
Editorial
Photographer
Creation date
18-03-2024
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