[ExI] Supersized comet?

spike spike66 at att.net
Sun Jul 19 16:16:04 UTC 2015



From: extropy-chat [mailto:extropy-chat-bounces at lists.extropy.org] On Behalf Of Dan
Sent: Sunday, July 19, 2015 8:44 AM
To: ExI chat list
Subject: [ExI] Supersized comet?



>…Not terribly surprising to find Pluto has a tail.

>…Regards, Dan



Ja, every planet with an atmosphere has a tail.  The calculation to show how often an atom or molecule in the upper atmosphere gains escape velocity is not a difficult one.  The earth is constantly bleeding off hydrogen, with a few helium atoms making a break for it occasionally.  No worries however; we are not really running out of either, since nature has provided a radioactive source for both, and we get plenty of both in the solar wind.



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