Earth Sciences The origin of water

[Mofra]

This is a fascinating subject, with new discoveries challenging the long-held theory of how water formed on Earth.

'Incredible implications': Scientists re-write the book on where Earth's water came from

According to textbooks, Earth was dry before it was bombarded by water-containing rocks from the icy outer solar system. But that's not what a new study has found.

www.abc.net.au

Earth has vast oceans today, but our planet was a dry rock when it first formed — and water was a late addition, rained down in asteroids from the icy outer solar system.

That's what the textbooks say, but new research published today in the journal Science, adds weight to a competing idea that Earth was actually born 'wet'.

 

[Snake_Baker]

Interesting.

There's quite a bit to unpack here however, such as the earths atmosphere and solar UV implications.

 

[footyfan1978]

Too many variables in play to be sure. My money is on Gary Ablett Snr though.

 

[Pie eyed]

This is a fascinating subject, with new discoveries challenging the long-held theory of how water formed on Earth.

'Incredible implications': Scientists re-write the book on where Earth's water came from

According to textbooks, Earth was dry before it was bombarded by water-containing rocks from the icy outer solar system. But that's not what a new study has found.

www.abc.net.au

So theoretically, the transport method is the same, but what arrived and in what form differs.
The long held theory would have been the opposite, that water formed in space, not that it formed on earth.
I could accept either or both, due to the fact many asteroids, meteors etc contain water ice and that the chemistry required to support the new theory is sound.