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Space Flight at 50: The Journey Continues

Out of This World Photo Gallery

Despite budget cuts, scientific research continues into outer space

space exploration - Delta 2 rocket

Delta 2 rocket. — Erik Simonsen/Getty Images

5. Delta 2

In September, multiple unmanned probes will hitch a ride to the moon on a Delta 2 rocket. One will collect data on the moon's atmosphere and clingy dust — information important for future manned missions there.

Next: MESSENGER spacecraft. >>

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