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Author Topic:   Rosetta, Philae, Comet 67P & life.
Member (Idle past 973 days)
Posts: 1517
From: Michigan
Joined: 11-22-2009

Message 4 of 47 (734646)
07-31-2014 11:25 PM
Reply to: Message 1 by Tangle
07-20-2014 12:33 PM

Some questions
If the probe ... detects the same ratio of hydrogen and deuterium isotopes as in our oceans it will be pretty solid evidence that it was such meteors that delivered water to our arrid planet after it cooled.
What is it that is so special about the ratio of isotopes in our oceans that other sources of water would not be expected to have similar ratios?
Why would water need to be "delivered" to our planet? Why could it not have formed in situ ?? Is it just because the earth would have been hot when it formed? Wouldn't that be true of any celestial body... at least at one time?
Edited by herebedragons, : add subtitle

Whoever calls me ignorant shares my own opinion. Sorrowfully and tacitly I recognize my ignorance, when I consider how much I lack of what my mind in its craving for knowledge is sighing for... I console myself with the consideration that this belongs to our common nature. - Francesco Petrarca
"Nothing is easier than to persuade people who want to be persuaded and already believe." - another Petrarca gem.
Ignorance is a most formidable opponent rivaled only by arrogance; but when the two join forces, one is all but invincible.

This message is a reply to:
 Message 1 by Tangle, posted 07-20-2014 12:33 PM Tangle has not replied

Replies to this message:
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