A space explorer spotted a never-before-seen near-Earth asteroid after being put back into service, the U.S. space program said.
2013 YP139 is about 27 million miles from Earth. Based on its infrared brightness, scientists estimate it to be roughly 0.4 miles in diameter and extremely dark.
The explorer spacecraft originally was known as the Wide-field Infrared Survey Explorer, which had made the most comprehensive survey to date of asteroids and comets,
"We are delighted to get back to finding and characterizing asteroids and comets, especially those that come into Earth's neighborhood," said
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