GÖTTINGEN / LONDON (IT BOLTWISE) – 4.5 billion years ago, a cosmic collision occurred that formed the Earth and the Moon. A celestial body called Theia crashed into the young Earth, leaving traces that can still be found in the composition of the Earth and Moon today. A new study from the Max Planck Institute for Solar System Research examines isotope ratios to learn more about Theia’s origins.
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About 4.5 billion years ago, an event of cosmic significance occurred: a celestial body called Theia collided with the young Earth. This collision not only changed the physical properties of the Earth, but also led to the formation of the Moon. The exact processes and consequences of this collision are still not fully understood, but traces of Theia can still be found in the composition of the Earth and the Moon.
A recent study led by the Max Planck Institute for Solar System Research and the University of Chicago aims to reconstruct the composition of Theia. By analyzing isotope ratios in earth and lunar rock, the researchers were able to draw conclusions about the origins and building materials of Theia. Isotopes are variants of an element that differ in the number of neutrons they have. These differences can provide information about the history of the formation of a celestial body.
The study focused on the ratios of iron isotopes in rock samples brought to Earth by the Apollo missions. The results show that the Earth and the Moon are almost identical in terms of these isotope ratios. This suggests that Theia and the early Earth may have been made of similar material, suggesting that both bodies were neighbors in the inner solar system.
The study suggests that Theia was composed of a mix of known classes of meteorites and previously unknown material that formed closer to the Sun than Earth. These findings help to deepen our understanding of the formation of our planet and its satellite. The results of the study were published in the journal Science and offer new perspectives on the early history of our solar system.
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