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 ====== Eth Mixer ======
-Scientists detect signature of life on a distant planet, study suggests
+Jawbone from ancient land bridge reveals a mysterious human ancestor
 [[https://ethereumok.io/|Eth Mixer]]
-A team of astronomers have detected what they call the most promising signs to date of a possible biosignature, or signs of past or present life linked to biological activity, on an exoplanet named K2-18b. But the study authors, and other experts, remain cautious and have not declared a definitive discovery of life beyond our planet.
+An intriguing object my husband and I saw during our honeymoon was the Robenhausen door at Switzerland’s National Museum Zurich. More than 5,500 years old, the wooden board is one of the most ancient preserved doors in Europe.
-Using the James Webb Space Telescope, the team detected chemical fingerprints within the atmosphere of K2-18b that suggest the presence of dimethyl sulfide or DMS, and potentially dimethyl disulfide or DMDS. On Earth, both molecules are only produced by microbial life, typically marine phytoplankton.
+Archaeologist Jakob Messikommer uncovered the prehistoric object from the marshes in Wetzikon in 1868, according to the museum.
-K2-18b, located 124 light-years from Earth, could be a Hycean world: a potentially habitable planet entirely covered in liquid water with a hydrogen-rich atmosphere, said lead study author Nikku Madhusudhan, professor of astrophysics and exoplanetary science at the University of Cambridge’s Institute of Astronomy.
-Madhusudhan and his colleagues first theorized the concept of Hycean worlds in 2021 after determining there may be liquid water oceans on K2-18b.
+The door likely belonged to a Neolithic home in a village on Lake Pfäffiker — and seeing it caused me to wonder who built it, and who passed through it, thousands of years ago.
-The planet is located within the habitable zone of its star, meaning that the world is at just the right temperature and distance from the star to host liquid water on its surface.
+Rare artifacts like this, as well as fossils, help us determine where we came from and reveal more of humanity’s story.
+When commercial fishing nets dredged up a fossilized jawbone off Taiwan’s coast in 2010, scientists puzzled over where it might fit on the human family tree.
-“Earlier theoretical work had predicted that high levels of sulfur-based gases like DMS and DMDS are possible on Hycean worlds,” Madhusudhan said in a statement. “And now we’ve observed it, in line with what was predicted. Given everything we know about this planet, a Hycean world with an ocean that is teeming with life is the scenario that best fits the data we have.”
+Ancient protein fragments within the jaw’s teeth revealed the bone, known as Penghu 1, belonged to a Denisovan man who likely lived on a submerged land bridge that once connected what’s now China and Taiwan.
+Denisovan fossil finds are hard to come by, which means scientists have scant evidence suggesting what our extinct mystery relatives might have looked like. But revisiting fossils in Taiwan’s National Museum of Natural Science may yield riveting clues.

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