Methane on Mars could signal life [now]

In summary, scientists have found methane in the Martian atmosphere, which could potentially indicate the presence of life on Mars. This discovery was made through telescopes on Earth and confirmed by instruments on the European Space Agency's Mars Express craft. The short lifespan of methane in the atmosphere suggests that it is being constantly replenished, and there are two possible sources: active volcanoes or microbes. Further research is needed to determine the exact source and annual production rate of methane on Mars.
  • #1
Ivan Seeking
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Could it be...? :eek:

Methane has been found in the Martian atmosphere which scientists say could be a sign that life exists today on Mars.
It was detected by telescopes on Earth and has recently been confirmed by instruments onboard the European Space Agency's orbiting Mars Express craft.

Methane lives for a short time in the Martian atmosphere so it must be being constantly replenished.

There are two possible sources: either active volcanoes, none of which have been found yet on Mars, or microbes. [continued]

http://news.bbc.co.uk/2/hi/science/nature/3577551.stm
 
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  • #2
Methane occurs in comets; carbon is found in carbonaceous meteorites; several million (?) tonnes of extra-(martial?) material falls on Mars each year ... how much methane in Mars' atmosphere arises from these sources?

Given that methane has a short life in the martian atmosphere, what is the annual rate of methane production implied by these results (in tonnes/year)?
 

FAQ: Methane on Mars could signal life [now]

1. What is methane and why is it significant in the search for life on Mars?

Methane is a simple organic compound consisting of one carbon atom and four hydrogen atoms. In the search for life on Mars, methane is significant because it is produced by certain types of microbes on Earth and could potentially indicate the presence of microbial life on Mars.

2. How is methane detected on Mars?

Methane on Mars can be detected through telescopic observations from Earth or by instruments onboard spacecraft orbiting or roving on the planet's surface. The presence of methane can also be measured by analyzing samples of the Martian atmosphere.

3. What sources could be producing methane on Mars?

There are several potential sources of methane on Mars. These include geological processes such as the breakdown of rocks and the release of methane trapped in ice or minerals, as well as biological processes such as microbial activity.

4. Could methane on Mars be a false positive for life?

Yes, it is possible that methane on Mars could be a false positive for life. Other non-biological processes, such as photochemical reactions or meteorite impacts, could also produce methane on the planet. Further studies and analysis are needed to determine the source of methane on Mars and confirm if it is indeed a sign of life.

5. What are the next steps in investigating the possibility of life on Mars based on the presence of methane?

The next steps in investigating the possibility of life on Mars based on methane detection include conducting more detailed analysis of the methane levels in different locations and at different times, as well as searching for other biomarkers and evidence of microbial activity. Future missions to Mars will also continue to search for signs of past or present life on the planet.

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