DailyDirt: Mounting Evidence For Life On Mars
from the urls-we-dig-up dept
A warmer, wetter Mars might have been a habitable world, but it’s not clear exactly how the conditions on Mars changed and became so different. Our neighboring planet had the best chances for harboring life as we know it, even if it doesn’t anymore. There’s really no proof that Mars supported life (yet?), but it’s not impossible to think that things once lived there. Here are just a few clues that could lead to finding alien lifeforms.
- NASA’s Curiosity rover measured a spike of methane gas that could indicate biological activity. Of course, this methane plume might have non-biological origins, but it’s very interesting to see fluctuations of organic molecules. [url]
- Sediment found on Mars might have been home to microbial colonies, analogous to life on Earth, forming microbially-induced sedimentary structures (MISS). Similar-looking rock structures don’t necessarily mean microbes lived on Mars, but it would be an extraordinary coincidence. [url]
- An ancient freshwater lake likely existed on Mars for at least 100,000 years. The presence of fine-grained sedimentary rocks and their chemical composition point to a sizable body of water that might have been common on the red planet in its distant past. [url]
If you’d like to read more awesome and interesting stuff, check out this unrelated (but not entirely random!) Techdirt post via StumbleUpon.