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Imagine yourself orbiting high above the clouds, gazing down at tiny Earth below. Will you be the next astronaut to blast off? Investigate the history, present, and future of space exploration and take a step toward the launch pad. What's Up With Outer Space: October 2007: 50th anniversary of Sputnik I, the first successful launch of an artificial satellite. August 2007: Teacher takes flight aboard space shuttle Endeavour. August 2007: Pluto's off the list of planets. Neil deGrasse Tyson explains why.
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