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Space Flight at 50: The Journey Continues

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Despite budget cuts, scientific research continues into outer space

space exploration - NASA Kepler telescope

Kepler. — NASA

10. Kepler

The NASA Kepler space telescope's search for planets outside our solar system found 1,235 new candidates. The five most intriguing are similar to Earth in size and temperature — in other words, possibly habitable.

Next: Michio Kaku says "we are not alone in the universe." >>

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