Water covers about 70% of Earth’s surface, yet its origins have puzzled scientists for years. Recently, researchers from the University of Portsmouth proposed a fascinating answer: water may have first formed shortly after the Big Bang.
According to their findings, water originated in the aftermath of supernova explosions, occurring 100 to 200 million years after the Big Bang. This discovery implies that the building blocks for life on our planet were present much earlier than previously believed.
Using computer simulations, the scientists demonstrated that as the first stars exploded and cooled, newly formed oxygen combined with hydrogen in the debris, resulting in water. This water likely played a significant role in the formation of the universe’s earliest galaxies.
Dr. Daniel Whalen and his team highlighted that these simulations indicate that water was a key element in the early universe, suggesting it was already around billions of years before life emerged on Earth.
To understand how this all happened, we need to look back at the Big Bang. In the initial moments, hydrogen, helium, and lithium formed as particles cooled and combined into atoms. However, oxygen did not appear until much later when stars produced it through nuclear reactions during their lifecycles. These stellar processes became hubs of heavy element creation.
About 100 million years after the Big Bang, gas clouds began to clump together, forming the first stars. When these stars burned out, they exploded in colossal supernovae, reaching temperatures of nearly a billion degrees Celsius. This extreme heat enabled hydrogen and helium to fuse into heavier elements, including oxygen.
The explosions sent hydrogen and oxygen into space, enveloping the remnants of the stars. Over the next several million years, these elements clumped together, forming water in the debris clouds. The simulation results showed that the smaller supernova could produce about one millionth of a solar mass of water, and the larger one produced even more at a faster rate.
This finding suggests that water might have existed in the universe long before planets formed. It raises interesting questions about how water reached Earth and other celestial bodies capable of supporting life.
The research indicates that the dense regions of debris left behind by these supernovae are likely where planets formed. In these regions, water levels could be significantly higher than in the average cosmic clouds. This means that the necessary conditions for life might have formed earlier than we thought.
Overall, this research gives us a fresh perspective on the origins of water and its vital role in the early universe. It reminds us how interconnected the story of water is with our understanding of life itself.
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