The expansion of the universe is speeding up—contrary to what many physicists expected. A "heat death" is coming, but it's not what you think.
- The expansion of the universe is accelerating as the force of dark energy wins out over the pull of all the universe's collective gravity.
- As every object in space moves farther and farther away from all other objects in space, the universe will reach a state of maximum entropy, and 'heat death' will ensue. As astrophysicist Dr. Katie Mack points out, heat death is not actually a hot phenomenon—it's also known as the "Big Freeze."
- Around 100 billion years from now, the universe will have expanded so much that distant galaxies won't be visible from Earth, even with high-powered telescopes. Stars will disappear in a trillion years and new stars will no longer form. The "good' news is that humans probably won't be around to witness the machine as it breaks down and dies.
The End of Everything: (Astrophysically Speaking)
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This story originally appeared on: Big Think - Author:Katie Mack