Where did our planet come from, where did the water come from?

[atomsmasher]

On 8/14/2023 at 10:48 AM, Moontanman said:

You are suffering from the delusion that Earth's water was somehow created on the Earth.   

When you see a white smoke trailing a jet what you are seeing is the reflection of water crystals created by the burning of hydrogen and oxygen.

Yes, water was created during this burning process.

[Moontanman]

23 hours ago, atomsmasher said:

When you see a white smoke trailing a jet what you are seeing is the reflection of water crystals created by the burning of hydrogen and oxygen.

Yes, water was created during this burning process.

 

This would be true, but that doesn't mean all or even a significant fraction of the Earth's water was made on the Earth. In fact quite the opposite is true, most of the Oxygen in Earth's atmosphere was made by plants by splitting up H2O and CO2 and combining the result to make sugars and free oxygen. Earth's water, the vast majority of it, existed before the Earth formed.  

[Moontanman]

Our planet was formed by the condensation of an interstellar gas cloud triggered, in all probability, by a nearby supernova 5.0, or so, billion years ago.