Allende meteorite fall (1969)
A fireball scattered thousands of meteorite fragments near Pueblito de Allende in Chihuahua, Mexico. Scientists soon found calcium-aluminum-rich inclusions in the stones, which turned out to be the oldest material in the solar system.
Researchers gained pristine CAIs to study, launching a new field of early solar system geochemistry.
CAIs became the benchmark for the solar system's earliest solids, the same grains studied in the new MIT work.
The MIT team analyzed exactly the type of material Allende established as a research target. Half a century later, those grains now carry magnetic as well as chemical information.
