Researchers believe that life on Earth will end when the atmosphere's oxygen levels decline, which say will happen in about a ...

All that said, the findings can’t confirm the terrestrial life theory beyond a doubt. There’s still a chance hydrogen-heavy meteorites helped us along. Still, the new evidence makes a strong case that ...

The findings, which support the theory that the formation ... develop the conditions to support life. The origin of hydrogen, and, by extension, water, on Earth has been highly debated, with ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A team of ...

“The amount we estimate of this gas in the atmosphere is thousands of times higher than what we have on Earth,” he explained, saying that, if the link to life is valid, “then this planet wil ...

Water is essential to life as we know it, but scientists are still unsure about how it originated on Earth. One theory is that asteroids ... s Department of Earth Sciences said in a university ...

AFP/Getty Images Carbonate minerals typically form when carbon dioxide reacts with water and rock — which makes them a cosmic calling card for life-friendly ... not unlike Earth’s, with ...