It is unsuccessful to find Planet 9 again.

A theorized huge, ninth planet beyond the orbit of Neptune once again wasn't

Astronomers scanned a large portion of the sky using the 6-meter Atacama Cosmology

according to the scientists behind the research, although they acknowledged that more

"Their search found many tentative candidate sources — about 3,500 of them — but none could

the Harvard-Smithsonian Center for Astrophysics, a participating institution in the research

It's the latest in a string of fruitless searches in the past decade, after a team of astronomers Chadwick A

The team behind the new research acknowledged how tough the search would be to find such a planet

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