AI Insight
A new model predicts that plant life on Earth could survive for up to 2 billion more years before conditions become inhospitable. The sun's luminosity increases by approximately 10% every billion years, gradually raising Earth's surface temperature. This progressive increase in solar energy output will eventually make the planet too hot to sustain photosynthetic life.
Why it matters
This research provides a timeline for the habitability of Earth and helps scientists understand the outer limits of the biosphere's endurance under increasing solar radiation. The findings contribute to our understanding of planetary habitability and may inform the search for life on exoplanets orbiting stars of different ages.
Understand the Science
Vegetarians need not worry yet—plants will be on Earth for a long time to come. But not forever. The sun will ultimately determine the long-term existence of life on Earth. Its total energy output, called luminosity, has been increasing over epochs and eons by about 10% every billion years—determining much of Earth’s surface temperature. This will continue for billions of years in the future.
Source: How long can plants survive on Earth? New model suggests up to 2 billion more years