Meteorite That Crashed Through New Jersey Home Contains Rare Amino Acids and Brine, Offering Clues to Life's Origins

Jul 15, 2026

On July 16, 2024, a meteor streaked over the northeastern U.S. before a 1.35-kilogram fragment crashed through a home in Hillsborough, New Jersey. Prompt preservation by the homeowner yielded an exceptionally pristine CM1/2 carbonaceous chondrite. Analysis revealed sodium-rich CM1 clasts and salt minerals, indicating ancient subsurface brine mobility on its parent asteroid. The meteorite also contains a highly diverse suite of extraterrestrial amino acids, supporting theories that space rocks delivered the prebiotic organic building blocks necessary for the emergence of life on Earth.

Hillsborough meteorite fall recovery

▪The homeowner collected the Hillsborough meteorite fragments using disposable gloves and aluminum foil, storing them in glass jars to prevent terrestrial contamination.
▪A daytime meteor entered Earth's atmosphere at approximately 14.4 kilometers per second on July 16, 2024, creating a sonic boom over the New York metropolitan area.
▪A 1.35-kilogram fragment of the meteor crashed through the roof and bedroom ceiling of a home in Hillsborough, New Jersey, on July 16, 2024.

CM1 clast sodium enrichment

▪Scanning electron microscopy of the Hillsborough meteorite revealed a few small CM1 clasts that are highly enriched in sodium compared to the surrounding CM2 matrix.
▪The Hillsborough meteorite is classified as a rare CM1/2 carbonaceous chondrite breccia, representing only the second witnessed fall of this type.
▪The sodium enrichment in the Hillsborough CM1 clasts is concentrated in fractures within dolomite minerals.

Brine evaporite evidence

▪The presence of salt-rich fragments indicates the Hillsborough meteorite originated from a near-surface region of its parent asteroid where liquid water evaporated.
▪The concentration of sodium in dolomite fractures suggests the historical passage of sodium-rich, late-stage brines through the parent asteroid.

Amino acid distributions

▪The total abundance of identified C2 to C5 amino acids in the Hillsborough meteorite spans a wide range from approximately 44 to 625 nmol/g.
▪The Hillsborough meteorite contains a complex suite of hundreds of amino acids, the majority of which are rare or nonexistent in life on Earth.

Prebiotic organic compounds

▪The delivery of amino acids, carboxylic acids, and soluble organic molecules by CM-type asteroids may have contributed to the prebiotic organic inventory on early Earth.
▪The high relative abundance of glycine and other alpha-amino acids in the Hillsborough meteorite suggests formation by HCN polymerization or Strecker-cyanohydrin synthesis.

Aqueous alteration processes

▪The Hillsborough meteorite contains 1.8% carbon and 0.07% nitrogen by weight, with isotopic ratios typical of primitive CM-type carbonaceous chondrites.
▪The Hillsborough meteorite fragments show a greater degree of aqueous alteration by liquid water than is typically observed in standard CM2 carbonaceous chondrites.