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On the Hunt For a Mystery Planet

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Scott Sheppard, Subaru Telescope

Astronomer Scott Sheppard is looking systematically for distant objectsone of which could be the elusive Planet X.

Credit: Chris Maddaloni/Nature

Astronomer Scott Sheppard runs through his checklist as he settles in for a long night of skygazing at the Subaru telescope atop Mauna Kea, Hawaii.

From Nature
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