expected to burn out 5 bilhões de anos 5 billion years http://phys.org/news/2015-02-sun-wont-die-billion-years.html 5 billion years http://phys.org/news/2015-02-sun-wont-die-billion-years.html hospitable red giant hospitable hospitable death of our Sun in a few billion years tešiť 5 billion years 5 billion years sun won’t die red giant more than halfway red giant hospitable red giant 5 billion years 5 billion years red giant phys.org/news/2015-02-sun-wont-die-billion-years.html red giant red giant few billion years left red giant red giant hospitable 5 billion years death of our Sun in a few billion years Sun has around 5 billion years left death of our Sun in a few billion years 5 billion years few billion years left hospitable death of our Sun in a few billion years red giant death of our Sun in a few billion years sun won’t die 5 billion years 5 billion years red giant red giant red giant