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Study Reveals Angrites From Lost Protoplanet Larger Than Expected

4/18/2026

Summary

Story summary

A study led by Aaron Bell of the University of Colorado Boulder, published in Earth and Planetary Science Letters, proposes angrites originate from a lost protoplanet the size of Earth's moon.
Researchers found evidence angrites are remnants of a disrupted protoplanet in the early solar system, including aluminum-rich NWA 12,774.
NWA 12,774 implies a minimum protoplanet radius of 620 miles, suggesting early embryos could form larger than previously thought.

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Story summary

A study led by Aaron Bell of the University of Colorado Boulder, published in Earth and Planetary Science Letters, proposes angrites originate from a lost protoplanet the size of Earth's moon.
Researchers found evidence angrites are remnants of a disrupted protoplanet in the early solar system, including aluminum-rich NWA 12,774.
NWA 12,774 implies a minimum protoplanet radius of 620 miles, suggesting early embryos could form larger than previously thought.