On July 16, 2024, a meteor streaked across the New York City region, producing a sonic boom before breaking apart over New Jersey. The meteorite, weighing more than two pounds, crashed through the roof of a home in Hillsborough, NJ. Scientists have now determined that the unusual space rock preserves evidence of salty fluids on its parent asteroid and contains organic compounds that may offer clues about the chemistry preceding life on Earth.

Published in Science Advances, the study identified the meteorite as a rare CM1/2 carbonaceous chondrite, a primitive type of meteorite altered by water. Only the second witnessed fall of this specific type, it contained tiny fragments rich in salts, suggesting that water near the asteroid's surface evaporated and concentrated into briny fluids.

Researchers also found a diverse collection of soluble organic compounds, including amino acids, along with carbon and nitrogen isotope signatures characteristic of CM meteorites. The findings indicate that water-driven chemical reactions inside the asteroid may have helped create some of these compounds.

The meteorite is especially valuable because it can be compared with samples returned directly from asteroids Ryugu and Bennu, which also contain evidence of ancient brines. Scientists are now identifying the specific salt minerals in the Hillsborough specimen to determine how closely its chemistry matches those asteroid samples.

The study reinforces the possibility that primitive asteroids acted as natural chemical laboratories, producing and delivering organic molecules to the early Earth. Some recovered fragments will eventually be curated by the American Museum of Natural History, preserving this rare record of the early solar system for future research.