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View Full Version : Discussion: Search for Mars Methane



Fraser
2005-Jul-20, 04:25 PM
SUMMARY: Since scientists announced the discovery of methane in the atmosphere of Mars last year, there has been a controversy about whether this is an indication of life on the planet or not. Methane should only last a few hundred years in the Martian atmosphere before it breaks apart, so some source is continually producing it. On Earth, the main source of methane is from life; mainly microbes. But could there be some other natural geological process on Mars keeping this gas in the atmosphere?

View full article (http://www.universetoday.com/am/publish/interplanetary_whodunit.html)

What do you think about this story? Post your comments below.

Eric Vaxxine
2005-Jul-21, 08:50 AM
I am deliberately not posting any web addresses that point to life on Mars. But this official image is interesting.

http://www.msss.com/moc_gallery/m07_m12/im...8/M0804688.html (http://www.msss.com/moc_gallery/m07_m12/images/M08/M0804688.html)

Jakenorrish
2005-Jul-22, 08:22 AM
As we all know, the jury is still out on this one. Personally I don't see why the methane can't be produced by both geological activity and life as it is here on Earth. I'm puzzled as to why the scientific community seems to be trying to pick one or the other as the reason for the methane.

Surely if Mars and Earth have similarities, then Both types of methane producing activity are taking place, but to a much lesser degree...?

Nereid
2005-Jul-26, 09:58 PM
One or two small extra bricks in a building that will take decades, if not centuries, to build.

Planets are complex places, and working out 'what it will be like' from first principles is invariably difficult and frequently wrong.

Remind me again, how does one eat an elephant?