Features
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Pioneer 10 and 11
An overview of the first spacecraft to travel to an outer planet.
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The Pioneer Project →
The Pioneer series of spacecraft performed first-of-their-kind explorations of the Sun, Jupiter, Saturn and Venus.
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Pioneer 10's Silver Anniversary →
A celebration of the most remote man-made object launched into the cosmos.
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Seven Billion Miles and Counting →
On April 28, 2001, after nearly 30 years in operation, scientists receive a faint but audible signal from Pioneer 10.
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Farewell Pioneer 10 →
After more than 30 years, the venerable Pioneer 10 spacecraft sent its last signal to Earth on Jan. 22, 2003.
World Book at NASA
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Space Exploration
Our human response to curiosity about Earth, the moon, the planets, the sun and other stars, and the galaxies.