A meteorite that crashed into a New Jersey home on July 16, 2024, has revealed rare amino acids and sugars, offering clues about life’s origins and ancient water in the solar system, according to NASA scientists.
The Hillsborough meteorite, which pierced a roof in Somerset County, ca.news.yahoo.com, has become a scientific treasure. Its recovery by homeowners—who swiftly preserved the fragile space rock—allowed researchers to analyze its composition, uncovering evidence of ancient water and organic molecules critical to life. The findings, published in Science Advances, suggest that asteroids may have delivered essential building blocks for life to Earth.
A Fragile Cosmic Messenger
The meteorite, a CM-type carbonaceous chondrite, was detected by radar after breaking apart 22 miles above Earth. Its journey began in the asteroid belt between Mars and Jupiter, where it orbited for millions of years before colliding with Earth. It is the first CM type meteorite that contained bits of rock that preserved the subsurface of the original asteroid,
said Peter Jenniskens, a NASA researcher, via email. We really have a unique window here on the physical properties of the parent asteroid.
The meteorite’s fragility made its recovery exceptional. Unlike most space rocks, which crumble upon impact, the Hillsborough fragment remained largely intact. Homeowners, who wished to remain anonymous, collected the black shards using aluminum foil and glass jars, preventing contamination. The entire experience has been incredible, and we’re honored to have played a small part in advancing scientific understanding through its study,
they said in a statement to ABC 6.
Amino Acids and the Building Blocks of Life
Analysis of the meteorite revealed a complex suite of amino acids,
the fundamental building blocks of proteins. Most of the amino acids detected in Hillsborough are rare or nonexistent in life on Earth, so they are truly extraterrestrial in origin,
said Dr. Danny Glavin, a NASA scientist. The discovery aligns with earlier findings of organic compounds in other meteorites, but Hillsborough’s pristine condition offers a clearer glimpse into the early solar system.
The meteorite also contains hydrated minerals, indicating that salty water once flowed through its parent asteroid. If you follow the water through the solar system, you’re actually following life,
said Mike Zolensky, a meteorite researcher. The presence of brine suggests that asteroids may have played a role in delivering water to early Earth, a theory supported by the discovery of liquid water traces in other meteorites.
Sugars in the Stars: A Clue to RNA’s Origins
A separate study, published in Proceedings of the National Academy of Sciences, identified sugars in meteorites, including one that landed in Australia in 1969. Ribose, a key component of RNA, is “remarkable” for its fragility, according to NASA’s Jason Dworkin. It is remarkable that a molecule as fragile as ribose could be detected in such ancient material,
he said. The finding supports the “RNA world” hypothesis, which posits that RNA preceded DNA in life’s evolution.
The study’s lead author, Yoshihiro Furukawa of Japan’s Tohoku University, noted that the sugars likely originated in space. The extraterrestrial sugar might have contributed to the formation of RNA on the prebiotic Earth which possibly led to the origin of life,
he said. This adds to growing evidence that asteroids could have seeded Earth with the chemical precursors for life.
A Window into the Early Solar System
The Hillsborough meteorite’s classification as a CM½—a rare intermediate type between CM1 and CM2—offers insights into asteroid evolution. Jenniskens noted that the sample marks only the second time a CM½ meteorite has been witnessed falling to Earth. The meteorite’s composition suggests it experienced heat and cold cycles as it spun in sunlight, fragmenting about 200,000 years ago before hitting Earth.
Researchers also detected high sodium levels, likely from icy brines within the asteroid. As water evaporated, these brines left behind salt minerals that could have facilitated life’s chemistry. The suite of amino acids in Hillsborough was even more diverse than those found in pristine samples returned from the carbon-rich asteroids Bennu and Ryugu,
Glavin noted.
The meteorite’s journey began with a collision in the asteroid belt millions of years ago, which created a family of space rocks. A smaller collision 6 million years ago destroyed one of these asteroids, from which a piece ended up in near-Earth orbit that experienced heat/cold cycles from spinning in the sunlight and fragmented about 200,000 years ago. Then it still took that long to hit the small target of Earth,
Jenniskens wrote.
Scientists are now analyzing the meteorite to determine how abundant these sugars and amino acids are, and how they might have influenced early life. The findings underscore the role of asteroids in shaping our solar system and the potential for life beyond Earth.
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