Heat Death may sound like the name of a giant death ray conceived by aliens, but it’s actually concerning something far worse and something with a scientific basis. The universe runs on energy, which is just the movement of particles at high velocity. This movement creates heat. On the other hand, as the universe expands farther and farther, this movement slows. When it stops completely, so will the heat. In essence, the universe will run out of energy and everything will freeze. Every star will stop shining and all life on Earth and anywhere else will cease to exist. The good thing is this event is so far in the future that the mind can’t comprehend it. The bad news is that it isn’t fully understood, and there’s no real way to combat it.