Scientists have finally determined when Elon Musk’s warning that “eventually, all life on Earth will be destroyed by the sun” could come to pass.

To predict the sun’s long-term evolution, researchers from Tōhō University in Japan and NASA employed mathematical models and sophisticated supercomputers.

According to their predictions, by the year 1,000,002,021, life on Earth will be extinct due to the sun’s increasing brightness and heat, which would boost global temperatures and progressively lower oxygen levels.

They also discovered that the sun would reach its red giant phase, which is when it runs out of hydrogen fuel and undergoes a massive expansion, in roughly five billion years.

The inner planets, such as Mercury, Venus, and possibly Earth, will thereafter be swallowed up by the enlarged red giant.

Musk is still pushing for Mars colonisation, even though this cosmic destination is still a long way off.

“Mars is life insurance for life collectively,” he told Fox’s Jesse Watters on Monday.