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American Focus > Blog > Tech and Science > Impact That Gave Us a Moon Could Explain Why Earth Now Has Life : ScienceAlert
Tech and Science

Impact That Gave Us a Moon Could Explain Why Earth Now Has Life : ScienceAlert

Last updated: July 7, 2025 7:25 pm
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Impact That Gave Us a Moon Could Explain Why Earth Now Has Life : ScienceAlert
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New Article:

The formation of Earth as a habitable planet in the Solar System is a fascinating tale of chaos, collisions, and cosmic chemistry. Among all the rocky planets, Earth stands out as the only one capable of sustaining life. But how did our planet become warm, hospitable, and life-supporting amidst a sea of frigid desolation?

Cosmochemistry, an interdisciplinary field that studies the distribution of chemical elements, offers some insights into this puzzle. The Solar System was a tumultuous place 4.5 billion years ago, with planets still in the process of formation and celestial bodies crashing into each other.

One key factor in Earth’s ability to support life lies in the abundance of carbonaceous chondrites, a type of meteorite that contains amino acids and other essential chemicals for life. Studies have shown that between 5% and 10% of Earth’s mass came from carbonaceous chondrites, with a significant portion originating from the Theia impactor that is believed to have formed the Moon.

Recent research, titled “Dynamical origin of Theia, the last giant impactor on Earth,” delves deeper into the role of carbonaceous chondrites in Earth’s formation. Conducted by a team of researchers led by Duarte Branco from the Institute of Astrophysics and Space Sciences in Portugal, the study used dynamical simulations of the Solar System’s formation to investigate how Earth acquired its life-enabling materials.

The simulations revealed that Earth received a substantial amount of carbonaceous material from both planetesimals and planetary embryos, with Jupiter playing a crucial role in scattering these materials towards the inner Solar System. The researchers explored different scenarios, including the impact of giant planet dynamical instability, to understand how Earth’s unique composition was shaped by these cosmic events.

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One intriguing finding from the simulations was the role of Theia as Earth’s final impactor. The researchers demonstrated that Theia likely contained a significant amount of carbonaceous material, which could have played a vital role in making Earth habitable. The simulations also shed light on the timing of the impact, showing that it occurred within a few hundred million years after the dispersal of gas in the Solar System.

Overall, the research highlights the complex interplay of cosmic forces that shaped Earth into the life-supporting world we know today. From the chaotic collisions of the early Solar System to the precise timing of impacts and the influence of giant planets, a myriad of factors had to align for Earth to become a haven for life.

As we unravel the mysteries of Earth’s formation, we gain a deeper appreciation for the delicate balance of factors that make our planet a unique oasis in the vast expanse of the cosmos. The quest to understand our origins not only sheds light on Earth’s history but also offers insights into the potential for life elsewhere in the universe.

This article was originally published by Universe Today. Read the original article for more in-depth analysis of Earth’s formation and the role of carbonaceous chondrites in shaping our planet’s destiny.

TAGGED:EarthExplainGaveimpactLifeMoonScienceAlert
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