New Study Reveals Meteorites Harbor Vast Complexity of Organic Compounds

• Meteorites are not just sources of simple biological building blocks like amino acids; they act as vast, complex organic chemical reservoirs.
• Researchers identified over 66,000 unique molecular formulas in the Murchison meteorite and over 91,000 in the Aguas Zarcas meteorite.
• The study highlights that the solar system possessed sophisticated organic chemistry long before the emergence of life.

Methodology

• Researchers utilized a 21-Tesla Mass Spectrometer at the National MagLab to determine precise molecular mass and composition.
• An atomic force microscope (AFM) at Brookhaven National Laboratory was used to capture high-resolution images of the molecular structures.
• Samples were processed using a series of four sequential solvents (methanol, ethanol, chloroform, and toluene) with decreasing polarity to extract a wider range of organic matter than traditional water or acid washes.

Key Findings

• Findings include a diverse array of carbon-based molecules with carbon atoms ranging from 10 to 70 and atomic mass units up to 1,000.
• Analysis revealed the presence of stable organometallic compounds containing iron and magnesium.
• There was minimal overlap in the types of molecules extracted by different solvents, indicating a highly varied chemical composition.
• The two meteorites studied showed significant differences in their specific molecular makeup, despite both being carbonaceous chondrites.