heat-death

The Sun has about 5 billion years left. The last stars in the universe will burn for 10 trillion. After they go out, the cosmos enters an era so dark and cold that physics itself may eventually dissolve the matter we're made of.

Stars will fade, black holes will evaporate, and entropy will win. Here is what physics says a very advanced civilization could do to stretch its lifetime, and where each strategy runs out.

The universe began 13.8 billion years ago and will end — eventually. But how? Heat death, the Big Rip, the Big Crunch, and vacuum decay are all on the table. Here's what physics actually predicts for the final fate of everything.

Entropy is the reason ice melts, eggs don't unscramble, and the universe is heading toward a quiet, cold end. Here's what entropy actually is — and why it's the most powerful idea in physics.