Help make Alexa smarter on Alexa Answers. Sign in with Amazon

Science

When did pluto not become a planet?


In 2006 the International Astronomical Union (IAU) defined planets with Resolution 5A-a, Orbits the Sun, b, a nearly round shape, c, has cleared the neighborhood around its orbit. Resolution 6A defines Pluto as a Dwarf Planet, since it has not cleared its neighborhood (5A-c).

{{ relativeTimeResolver(1570555711590) }}

LIVE
Points points 89
Rating

Similar Questions
Sign in to view all similar questions

Join Alexa Answers

Help make Alexa smarter and share your knowledge with the world

LEARN MORE