New theory suggests Pluto may be a giant comet

New theory suggests Pluto may be a giant comet  NBCNews.com How did Pluto form its mysterious dunes?  Astronomy Magazine Pluto Has Dunes, But They're Not Made of Sand  Space.com Dunes on Pluto  Science Magazine Pluto has windswept dunes even though it shouldn't have enough wind to sweep  Washington PostFull coverage

(CLICK HERE TO READ AND SEE MORE)