The key to understanding life on other planets could be hidden on our own.
Does life exist elsewhere in the universe? If so, how do scientists search for and identify it? Finding life beyond Earth is extremely difficult, partly because other planets are so far away and partly because we are not sure what to look for.A close-up view of the Clarkia site where you can see lacustrine clay and volcanic ash layers. This site represents Mars in our work.
A fossil magnolia leaf showing fall colors. This leaf likely fell off a tree in the fall once the trees paused photosynthesis for the winter and sank to the bottom of the lake, where it was buried. The leaf retained its fall coloring for 16 million years, though once being dug up and exposed to air, it quickly oxidized and lost its color.
The Perseverance Rover is collecting samples to learn more about Mars’ environment. NASA/JPL-Caltech via APcontain the geologic and climate history of the Jezero Crater landing site and may even contain preserved biomarkers of ancient life.for biomolecular authentication. That means we are developing ways to figure out whether ancient biomarkers from Earth, and hopefully Mars, are true echoes of life – rather than recent contamination or molecules from nonliving sources.
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