Organic Molecules in Space: Clues to Life's Origins Found in Comets and Asteroids
December 22, 2024In 2022, data from Rosetta revealed 44 different organic molecules, including glycine and dimethyl sulfide, the latter of which is exclusively produced by living organisms on Earth.
Comets, viewed as primordial materials from the early solar system, offer valuable insights into the organic inventory derived from interstellar clouds.
Two primary pathways for the formation of organic molecules are the stellar winds from dying stars and the icy environments of molecular clouds where dust grains accumulate carbon.
Experiments have demonstrated that simple organic molecules, such as methane and methanol, can form on the icy surfaces of dust grains in space under suitable conditions.
Recent studies suggest that organic complexity may increase during the planet formation process within protoplanetary disks surrounding new stars.
Saturn's moon Titan and Pluto are known to exhibit organic materials, prompting further investigation into the origins and formation processes of these molecules in space.
Astrobiologists are exploring complex organic molecules as potential biosignatures in the ongoing search for extraterrestrial life, with missions targeting Jupiter's moons and Titan for further analysis.
The James Webb Space Telescope has observed the earliest signs of organic chemistry in a young galaxy, indicating that complex molecules began forming shortly after the Big Bang.
Understanding organic chemistry in space could shed light on the origins of life and the conditions necessary for the development of complex molecules on other worlds.
Japan's Hayabusa2 and NASA's Osiris-Rex missions have confirmed the presence of organic molecules in asteroids Bennu and Ryugu, with Ryugu containing at least 20,000 types, including 15 amino acids.
Research indicates that the early stages of life's assembly may take place in space, supported by the discovery of organic materials in comets and asteroids.
The European Space Agency's Rosetta probe spent two years studying comet 67P/Churyumov-Gerasimenko, uncovering a variety of complex organic molecules.
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WIRED • Dec 22, 2024
The Universe Is Teeming With Complex Organic Molecules