An artist's impression shows the solar system seen from the Earth
An artist's impression of Earth's orbit around the sun.
  • Scientists think the sun will become too hot for life to handle in the next billion years.
  • An unexpected rescue mission could come in the form of a star flying by the solar system.
  • There's a slim chance the star could pull the Earth to a more habitable zone, a study suggested. 

In around a billion years, the sun will become hot enough to boil all the oceans on our planet, and life as we know it will be destroyed.

The fate of life on Earth, scientists think, is more or less sealed.

But a passing star could prove to be an unlikely savior, according to a new study by scientists from the University of Bordeaux, France, and the Planetary Science Institute in Tucson, Arizona.