There’s a New Definition for the Term “Planet”

[rangerrebew]

There’s a New Definition for the Term “Planet”
By: Shannon Hall | January 26, 2018
 

Scientists now understand where large planets stop and small brown dwarfs begin — a discovery that redefines the word “planet.”

Few astronomy terms are more divisive than the word “planet.” Although Pluto’s demotion in 2006 has long held the spotlight in the continuing — dare I say, raging — scientific debate, there are other larger worlds at stake. Indeed, scientists have long wondered just how massive a planet can be before it’s no longer considered a planet.

http://www.skyandtelescope.com/astronomy-news/new-definition-planet/