Home Creators Posts Import Register Favorites Logout
haven't archived this post yet. have a subscription? use the importer!

Content

I'm sure most of us grew up with the knowledge that Pluto was our solar  system's ninth planet. So what changed about the definition? Astrum  Answers! 

Files

Previews only

Why is Pluto not a planet?

I'm sure most of us grew up with the knowledge that Pluto was our solar system's ninth planet. So what changed about the definition? Astrum Answers! SUBSCRIBE for more videos about our other planets. Subscribe! http://goo.gl/WX4iMN Facebook! http://goo.gl/uaOlWW Twitter! http://goo.gl/VCfejs Donate! Patreon: http://goo.gl/GGA5xT Ethereum Wallet: 0x5F8cf793962ae8Df4Cba017E7A6159a104744038 Become a Patron today and support my channel! Donate link above. I can't do it without you. Thanks to those who have supported so far! Image Credits: ESA/ESO/NASA/Space Engine Music Credits: Anima - Love Again

Comments

Steven Owen Nell

I am currently listen to the audio book “Chasing new horizons”, have you read/listened to the book.

Uwe Böhnke

The definition of a planet is kind of: 1. big enough to be round like a ball (or almost). This size starts at about that of dwarf planet Ceres. or just below. 2. It circles around a sun (or brown dwarf or red dwarf). Can also be an elipse. 3. on it's way around the sun, there are no other objects like asteroids around. It is the third option that Pluto does not match.