Universe works like a cosmological neural network, argues new paper

Controversial physics theory says reality around us behaves like a computer neural network.

Credit: sakkmesterke
  • Physicist proposes that the universe behaves like an artificial neural network.
  • The scientist's new paper seeks to reconcile classical physics and quantum mechanics.
  • The theory claims that natural selection produces both atoms and "observers".
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NASA's new project lets you take a simulated ride in a Mars rover

Help future Mars rovers better navigate the red planet's treacherous terrain.

NASA/JPL-Caltech
  • NASA just announced its AI4Mars project, which lets you can take a virtually simulated tour around Mars via the Curiosity rover.
  • The simulation project is calling on users to help the rover better classify the planet's sometimes dangerous terrain by labeling images taken by Curiosity.
  • This project gives you a chance to participate in enhancing the new machine learning approaches for exploring Mars and unveiling its secrets.
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NASA videos show what sunsets look like elsewhere in the galaxy

On other planets, blue skies and red sunsets aren't the norm.

Credits: Geronimo Villanueva/James Tralie/NASA's Goddard Space Flight Center
  • A NASA scientist created animated simulations of how sunsets likely appear on Mars, Venus, Uranus, and Titan, Saturn's largest moon.
  • Sunsets appear differently on other planets because of differences in the atmosphere, which scatters light in unique ways.
  • Studying alien atmospheres helps scientists better understand atmospheric processes on Earth, and helps narrow the search for habitable planets.
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New 3D computer model shows how far a cough can spread indoors

This unsettling simulation shows how mucus-mist can rapidly spread in a grocery store.

Photo: Aalto University / YouTube
  • Finnish researchers have shown how a single cough can blast small aerosolized saliva particles around a grocery store.
  • There is an ongoing scientific debate about how the novel coronavirus moves through the air.
  • The bigger risk when it comes to COVID-19 is the transmission of larger droplets through close contact with others (three feet or less).
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3 superb arguments for why we live in a matrix – and 3 arguments that refute them

Is this the real life or is it just fantasy? And does it really even matter?

Red pill or blue pill? Image source: Adobe Stock
  • The simulation argument was first put forth in a paper published in 2003 by philosopher Nick Bostrom.
  • Bostrom assigns less than a 50 percent probability that we're living in a simulated universe.
  • Some physicists believe that we can test this scientifically.
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