Re: Methane found on Titan, some have said Methane = LIFE. Discussion? -- AMIGA Astronomy

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Subject: Re: Methane found on Titan, some have said Methane = LIFE. Discussion?

Author:
Blobrana

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Date Posted: 14:06:31 11/20/04 Sat
In reply to: Craig Chereek 's message, "Methane found on Titan, some have said Methane = LIFE. Discussion?" on 06:11:46 11/20/04 Sat

>Could not lesser vulcanism account for the lesser Methane on Mars?
It seems that recent measurements of sulphur dioxide (SO2) on Mars, using TEXES spectrograph at NASA's Infrared Telescope Facility (IRTF), in Mauna Kea, Hawaii, found that the most abundant volcanic gas (on Earth) is absent in the Martian atmosphere with an upper limit of 0.5 ppb, therefore seepage of the volcanic gases is `ineffective` on Mars and "cannot be a significant source" of methane.
"This is a crucial argument against volcanic methane."

And it has been calculated that only 6% of the Methane production could have been delivered by the impacts of comets, meteorites, and interplanetary dust.

And the distribution is slightly strange too..
There is substantial increase up to 250-ppb in the equatorial-latitudes, as compared to relatively low amounts visible in the high latitudes, around 50-ppb, with the range from 20 to 60-ppb.

It seems that the prospect of a living source becomes slightly more plausible.

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