Fifteen years ago, Pluto was kicked out ... lobby for a broader definition. The debate over classifying solar system objects reminds me of another classification challenge: categorizing the ...

The probe’s revelations have revived debate about Pluto ... Both Morison and Byrne agree the IAU classification has had a scientific impact, and think Pluto and similar bodies should be ...

WAYNESBORO - Almost 10 years years after Pluto was demoted from its planet status the debate continues over ... planets in the solar system to the classification of a dwarf planet by the ...

I blame the Pluto people for that. (This is what a debate among astronomers talking about the term ‘dwarf planets’ was like.) Philip Metzger: We would say that there are a lot of dwarf planets ...

Elon Musk, under the username "Kekius Maximus," has joined William Shatner in advocating for Pluto's reclassification as a planet. Shatner playfully suggested Musk persuade the President via executive ...

PASADENA, Calif. — Sitting behind a desk littered with space rocks and textbooks, CalTech astronomer Michael Brown barely has time to manage a few bites of pizza as he juggles media interviews.

Officially, Pluto is still not a planet. But five years after the ruling that demoted the icy object to dwarf planet, people continue struggling with the definition, and the debate over what ...

Long ago, in the pre-iPhone dark ages of 2006, Pluto was rebranded from its status as a planet and downgraded to dwarf planet classification, changing high school physics class forever.

The decision to reinstate Pluto as a planet is not a recent topic of debate, however. There has been much argument over the classification of a planet since the ruling was made by the IAU.