Tag

Aqueous Alteration

All articles tagged with #aqueous alteration

science18 days ago•6 min saved

Salty brines in an ancient asteroid unlock clues to life’s ingredients

Analysis of the pristine Hillsborough CM1/2 meteorite, which fell in daylight over New Jersey in 2024, reveals concentrated salty brines in its parent asteroid and signs of aqueous alteration, preserving salts and a suite of organic compounds including amino acids, implying primitive asteroids harbored chemically active environments that could have seeded life's ingredients on early Earth.

via ScienceAlert|

#amino-acids #aqueous-alteration #brines

space-exploration1 month ago•99 min saved

Lucy’s DJ flyby uncovers water clues in an ancient inner-belt asteroid

NASA’s Lucy spacecraft’s April 2025 flyby of the bi-lobed inner-belt asteroid 52246 Donaldjohanson (DJ) revealed iron‑bearing phyllosilicates indicating past liquid water and suggested DJ originated from a larger parent body that fractured about 155 million years ago; the findings, published in Science, help explain how water and organics were distributed in the early solar system as Lucy continues toward six Jupiter Trojan targets.

via Space|

#aqueous-alteration #donaldjohanson #inner-asteroid-belt