Key Takeaways
1. Oceans cover 70% of Earth’s surface, but the origin of Earth’s water remains unclear.
2. Earth formed about 4.5 billion years ago in a hostile environment with high temperatures and volcanic activity.
3. A significant event occurred around 4.561 billion years ago, possibly linked to a collision with a hypothetical planet called Theia.
4. The collision with Theia may have led to the formation of the Moon and contributed to the emergence of water on Earth.
5. The theory about Theia’s role in Earth’s water origin is still uncertain, and more research is needed to understand the beginnings of water on our planet.
As you might already know, oceans take up 70% of the Earth’s surface, yet we still don’t know where all the water comes from. Recently, a fresh study by two scholars at the University of Bern sheds light on this mystery.
The Early Earth
Earth is approximately 4.5 billion years old, and during its early days, it was a very hostile environment with extremely high temperatures and intense volcanic activity. In those times, our planet resembled Mercury or Venus much more than the blue globe we see today.
A Major Event
Even though life couldn’t develop then, a significant event occurred just a few million years after the Earth formed. Researchers Pascal Kruttasch and Klaus Mezger suggest that the Proto-Earth came together quite rapidly, taking merely 3 million years. However, a dramatic shift happened around 4.561 billion years ago.
At this pivotal moment, Earth’s composition changed greatly, which aligns with the impact from a theoretical planet known as Theia. This hypothetical planet is said to be the size of Mars and is believed to have collided with Earth.
Water’s Origin
This collision not only led to the Moon’s formation but also likely resulted in water emerging on our planet. The researchers argue that Theia originated far from the Sun and was frozen when it collided with Earth.
Still, it’s important to note that this remains a theory, and we should approach it with caution. Numerous enigmas still cloud the beginnings of water on Earth. Additionally, scientists looking for alien life on exoplanets might come up with other theories.
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