Has an Incredibly Long Future
According to the research discussed in the original article, scientists used mathematical models and hundreds of thousands of simulations to study how Earth’s atmosphere could change as the Sun becomes progressively brighter.
The study estimated that Earth’s oxygen-rich atmosphere could remain for roughly 1.08 billion years, with an uncertainty of about 140 million years. Eventually, increasing solar brightness could disrupt Earth’s climate and reduce the conditions needed for oxygen-producing life.
That means this isn’t something humans need to worry about in our lifetimes—or even