While details are understandably slim today, life on Earth is thought to have arisen about 4 billion years ago from a fateful blend of organic compounds popularly known as
According to a new study by a team from Germany and France, that scenario is not only plausible, but offers the most likely explanation for how Earth obtained certain building blocks of life, some of which would have formed more efficiently in interstellar space. Yet despite peptides' apparent importance in enabling life on Earth, the young planet probably didn't offer a great environment for their formation, the researchers add.
As this kind of molecular cloud condenses, its dust particles begin to coagulate, the researchers note, and the aminoketene molecules can assemble into chains – i.e., peptides.Within these circumstellar disks, comets or asteroids with large separations from their star are"the most interesting objects for the formation of peptides," the researchers
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