A meteorite discovered in the Sahara Desert appears to contain the first physical evidence of a planetary body that existed in the early solar system but no longer survives. The rare fragment suggests the solar system may have once included an additional rocky planet that was destroyed or ejected billions of years ago.
Researchers analyzing the meteorite's composition identified characteristics that do not match any known asteroid or planetary body currently in the solar system. The fragment's chemical signature points to a parent body with properties similar to terrestrial planets like Earth and Mars, but with distinct differences that indicate it came from a separate world. Scientists believe this parent body likely formed during the chaotic early period of solar system formation, when collisions between growing planets were common.
The discovery adds to growing evidence that the solar system's current configuration does not represent its original state. Computer models of planetary formation have long predicted that additional planets may have formed in the inner solar system before being destroyed through violent collisions or gravitational interactions. Until now, however, direct physical evidence of such lost worlds has remained elusive.
Meteorites provide scientists with samples of material from the early solar system that would otherwise be impossible to study. Most meteorites come from the asteroid belt, which contains fragments of objects that never grew large enough to become full planets. This particular specimen appears to represent something different: debris from a body that did achieve planetary size before meeting a catastrophic end.
The findings could reshape understanding of how the solar system evolved into its present form. If confirmed, the meteorite would represent the only known remnant of a lost planet, offering a rare window into the violent processes that shaped the worlds we see today. Researchers continue to analyze the fragment's isotopic composition and mineral structure to learn more about the conditions on this ancient world before its destruction.
The discovery has generated significant interest across the scientific community, with multiple outlets covering the findings. Researchers emphasize that further analysis is needed to fully confirm the meteorite's origins and what it reveals about early solar system dynamics. The work demonstrates how individual fragments recovered from Earth's deserts can provide crucial insights into planetary formation and the history of our cosmic neighborhood.