386 Galileo Spacecraft

ABOUT THE MISSION While its aim was to study Jupiter and its mysterious moons, which it did with much success, NASA’s Galileo mission also became notable for discoveries during its journey to the gas giant. It was the first spacecraft to visit an asteroid — two in fact, Gaspra and Ida. Galileo provided the only […]

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446 One Giant Leap for Mankind

In the 200,000-year history of Homo sapiens, our species has accomplished some pretty amazing things. We invented the wheel, the printing press, and Velcro, and determined how stars shine and the cosmos began. But arguably the coolest thing we’ve done happened July 20, 1969, when American astronaut Neil Armstrong set foot on the Moon and […]

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497 Astronauts Beyond Low-Earth Orbit

497 Astronauts Beyond Low-Earth Orbit Only 24 [American] astronauts have traveled beyond low Earth orbit; all were part of the Apollo Program. An all-star gathering of legendary American astronauts appeared in Cleveland Aug. 29, 2008 to celebrate NASA’s 50th anniversary. John Glenn, the first American to orbit Earth, Neil Armstrong, the first person to walk […]

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