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from the in-situ-production-of-TNT-on-Mars dept.
Arthur T Knackerbracket has found the following story:
A research team including research scientist Atsuko Kobayashi from the Earth-Life Science Institute (ELSI) at Tokyo Institute of Technology, Japan, and research scientist Mizuho Koike from the Institute of Space and Astronautical Science at Japan Aerospace Exploration Agency, have found nitrogen-bearing organic material in carbonate minerals in a Martian meteorite. This organic material has most likely been preserved for 4 billion years since Mars' Noachian age. Because carbonate minerals typically precipitate from the groundwater, this finding suggests a wet and organic-rich early Mars, which could have been habitable and favorable for life to start.
[...] Martian meteorites are pieces of Mars' surface that were themselves blasted into space by meteor impacts, and which ultimately landed on Earth. They provide important insights into Martian history. One meteorite in particular, named Allan Hills (ALH) 84001, named for the region in Antarctica it was found in 1984, is especially important. It contains orange-coloured carbonate minerals, which precipitated from salty liquid water on Mars' near-surface 4 billion years ago. As these minerals record Mars' early aqueous environment, many studies have tried to understand their unique chemistry and whether they might provide evidence for ancient life on Mars. However, previous analyses suffered from contamination with terrestrial material from Antarctic snow and ice, making it difficult to say how much of the organic material in the meteorite were truly Martian. In addition to carbon, nitrogen (N) is an essential element for terrestrial life and a useful tracer for planetary system evolution. However, due to previous technical limitations, nitrogen had not yet been measured in ALH84001.
This new research conducted by the joint ELSI-JAXA team used state-of-the-art analytical techniques to study the nitrogen content of the ALH84001 carbonates, and the team is now confident they have found the first solid evidence for 4-billion-year-old Martian organics containing nitrogen.
-- submitted from IRC
More information: Mizuho Koike et al, In-situ preservation of nitrogen-bearing organics in Noachian Martian carbonates, Nature Communications (2020). DOI: 10.1038/s41467-020-15931-4
(Score: 5, Insightful) by Barenflimski on Thursday April 30 2020, @09:38PM
It seems as we progress through history, one of the findings we keep making is that we are not all that special.
At first we were the only village that mattered. Then we realized there were many villages. Then we realized we weren't the only villages, we realized we all lived on the earth. Then we looked back in time and realized we weren't the only creatures that ever existed on planet earth, in fact dinosaurs lasted longer than us humans have up to this point. We realized the earth wasn't the center of everything. We learned we are in one of many galaxies.
It seems to me that one thing we are good at is always thinking we've found the last largest halo until we look farther and things are bigger than we could have ever imagined. Today it seems fairly clear we are a single dot, less than a pixel in our little universe. Could it be that we are the special, single dot that is actually seeding the rest of existence? Probably unlikely.
Until we know for sure, I will continue to enjoy imagining that everything interacts at some level with each other, and that over time planets shed and share their local material.