"What other celestial objects (besides the sun) have a strong enough gravitational pull to distort the orbital paths of some planets such as Pluto?"
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Astrobiology and Atlantis
A new set of experiments designed to test how bacteria change in response to space radiation are going up with space shuttle Atlantis and will be delivered to the International Space Station. Once there they will reside for more than a year on an external space station platform called EXPOSE. Space.com has the story...
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