The End of Everything (Astrophysically Speaking) by Katie Mack

 

"The question of how the world will end has been the subject of speculation and debate among poets and philosophers throughout history. Of course, now, thanks to science, we know the answer: it's fire. Definitely, fire. In about five billion years, the Sun will swell to its red giant phase, engulf the orbit of Mercury and perhaps Venus, and leave the Earth a charred, lifeless, magma-covered rock. Even this sterile smoldering remnant is likely fated to to eventually spiral into the Sun's outer layers and disperse its atoms in the churning atmosphere of the dying star."