Tópico: Nova teoria para a origem da água terrestre

[Buckaroo Banzai]

Do fim do ano passado, não lembro de ter visto por aqui...



Earth's water brewed at home, not in space

18:45 25 September 2007
NewScientist.com news service
Hazel Muir

Where did the Earth's oceans come from? Most scientists think they came from water-rich asteroids and comets raining down on the planet in its youth.

But now planetary scientists in Japan suggest the oceans were actually "home-grown" – they may have formed because the young Earth had a thick blanket of hydrogen, which reacted with oxides in the Earth's mantle to form lakes and seas.

[...]

http://space.newscientist.com/channel/solar-system/comets-asteroids/dn12693