Back in 2014 Sheppard and his colleague Chad Trujillo at Northern Arizona University were the first scientists to theorize about the existence of a giant planet in the outer solar system that is now being called Planet 9.
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Back in 2014 Sheppard and his colleague Chad Trujillo at Northern Arizona University were the first scientists to theorize about the existence of a giant planet in the outer solar system that is now being called Planet 9.
Source: tatoeba (12353242)
Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.