Scientists have proposed a potential raw source for Earth ’s water , saying it may have been delivered by the early environment around the Sun , as well as from asteroid or comets .

The origin of our piss has long been debated . Most theory seem to sharpen to weewee - rich comet or asteroids deliver the water at some full stop after the planet had make more than 4 billion years ago .

But in a newspaper published inGeophysical Research : Planets , a squad guide by Jun Wu from Arizona State University inquire another method acting . They suggest the solar nebula that our major planet was born in could have supply our planet with hydrogen necessary to form weewee .

“ For every 100 molecules of Earth ’s water system , there are one or two come from solar nebula , ” Wu said in astatement .

The idea that water was birth to our planet after it form has been questioned of late , notably because comets like 67P / Churyumov - Gerasimenko were find to have thewrong type of water . Namely , they have a dissimilar ratio of hydrogen to an isotope called deuterium .

So at least some of our water must have come from somewhere else . And this latest research period to our Sun ’s environment . The squad created a model that showed that 4.5 billion years ago at the nascency of the Solar System , large asteroids set out form into the planets like Earth .

One of these , a magma - covered fertilized egg , would become our satellite – but in the process , it scoop up gas from the solar nebula including nebula hydrogen . This would have been pulled towards the Congress of Racial Equality of our planet .

" The conclusion result … is that Earth likely formed with seven or eight global oceans ' worth of hydrogen , ” Steven Desch from Arizona State University , a Colorado - author on the study , said in a separatestatement .

“ The bulk of this indeed came from asteroidal sources . But a few tenths of an sea ’s worth of hydrogen occur from the solar nebula gas . "

Aside from being interesting for our own planet ’s organization , the inquiry is important for other world too . It suggests exoplanets , those beyond our Solar System , did not need to rely on asteroid impacts to get water – it could have been delivered by the nebula of their own stars .

“ This model suggests that the inevitable formation of water would in all probability fall out on any sufficiently bombastic rocky exoplanets in extrasolar organization , ” said Wu . “ I think this is very exciting . ”