Scientists have used a powerful supercomputer to predict when life on Earth will come to an end—and it’s sooner than many thought. According to a new study, Earth’s oxygen will disappear in about one billion years, making it impossible for most living things to survive, reported by NDTV News.
Researchers from Toho University in Japan, working with NASA’s planetary models, ran over 400,000 simulations to study how Earth’s atmosphere might change in the far future. Their results were published in the scientific journal Nature Geoscience under the title “The future lifespan of Earth’s oxygenated atmosphere.”
The team found that as the Sun ages, it will grow hotter and brighter. This will slowly heat the Earth, causing oceans to evaporate and the surface temperature to rise. As a result, plants will die, and the carbon cycle—which supports oxygen production—will break down. Without plants, oxygen levels will crash, and life as we know it will vanish.
Kazumi Ozaki, assistant professor at Toho University, explained that earlier studies predicted Earth’s biosphere might survive for 2 billion years. But this new research shortens that timeline, suggesting that oxygen could begin disappearing in just 1 billion years.
The Earth’s atmosphere may eventually return to a state similar to what it was like before life began—filled with methane and almost no oxygen. While some forms of life might adapt, complex creatures like humans wouldn’t survive.
This discovery doesn’t pose an immediate danger but offers a powerful reminder of Earth’s long-term future—and how fragile our planet’s life systems truly are.
