RT @SPACEdotcom: An unseen object with a mass somewhere between that of Earth and Mars could be lurking in the Kuiper Belt. https://t.co/zSLC95d60s

An unseen object with a mass somewhere between that of Earth and Mars could be lurking in the Kuiper Belt. https://t.co/zSLC95d60s

— SPACE.com (@SPACEdotcom) July 2, 2017

from Twitter https://twitter.com/iPhoneMaster13

July 02, 2017 at 11:45PM
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