Wtaer has always been around
I’m not sure why John Hill’s question about water is addressed to the Observer when a trip to the Library or a search on the Internet would soon inform him that the water we have on our planet has always been here.
There may be a small amount donated by a colliding asteroid and other insignificant amounts created by the combining of Hydrogen and Oxygen in an explosion.
An example would be the destruction of the “Hindenburg” airship on May 6th 1937 when the huge quantity of hydrogen caught fire and combined with the oxygen in the surrounding atmosphere to leave water.
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Hide AdMr Kennard says that common sense would suggest that an enormous explosion means lots of heat which in turn means no ice and no water. But there would be lots of water vapour which upon cooling would become water in its liquid form! So much for common sense.
Gary Cornford, Battle.