10 new things we’ve learned about death

If you don't want to know anything about your death, consider this your spoiler warning.

  • For centuries cultures have personified death to give this terrifying mystery a familiar face.
  • Modern science has demystified death by divulging its biological processes, yet many questions remain.
  • Studying death is not meant to be a morbid reminder of a cruel fate, but a way to improve the lives of the living.
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Culture & Religion

Researchers successfully sent a simulated elementary particle back in time

Don't start investing in flux capacitors just yet, though.

  • The second law of thermodynamics states that order always moves to disorder, which we experience as an arrow of time.
  • Scientists used a quantum computer to show that time travel is theoretically possible by reverting a simulated particle from an entropic to a more orderly state.
  • While Einstein's general theory of relativity permits time travel, the means to achieve it remain improbable in nature.
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Surprising Science

A mind-blowing explanation of the speed of light

Light exists outside of time.

  • The only things that travel at the speed of light are photons.
  • Nothing with any mass at all can travel at the speed of light because as it gets closer and closer to the speed of light, its mass increases. And if it were actually traveling at the speed of light, it would have an infinite mass.
  • Light does not experience space or time. It's not just a speed going through something. All of the universe shifts around this constant, the speed of light. Time and space itself stop when you go that speed.
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Is this why time speeds up as we age?

We take fewer mental pictures per second.

Photo by Djim Loic on Unsplash
  • Recent memories run in our brains like sped-up old movies.
  • In childhood, we capture images in our memory much more quickly.
  • The complexities of grownup neural pathways are no match for the direct routes of young brains.
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Mind & Brain

Is time real or is it an illusion?

Light exists outside of time.

  • Time can change depending on how fast you're moving through space. Also, time can "flow" at different rates for different observers.
  • Light doesn't experience time — it exists outside of time.
  • We perceive space and time differently, but they may be woven together. For instance, they both balance each other out: If you are still, time goes by at a natural rate. However, if you move through space very fast, time begins to slow down.
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