Mind Matters Natural and Artificial Intelligence News and Analysis

TagDaniel Clery

Exoplanets or Extrasolar planets with stars on background nebula, 3D illustration

The Search for Extraterrestrial Life 18

We are starting to find more different kinds of exoplanets and an unexpected source of water on Mars

In our universe: Time travel? “How a Rotating Universe Makes Time Travel Possible” At Universe Today, Stony Brook astrophysicist Paul Sutter notes that mathematical philosopher Kurt Gödel (1906–1978) wrote a model for Albert Einstein (1879–1955) of a universe that allows time travel into the past: “Gödel constructed a relatively simple and artificial model universe to prove his point. This universe is rotating and contains only one ingredient. That ingredient is a negative cosmological constant that resists the centrifugal force of the rotation to keep the universe static. / Gödel found that if you follow a particular path in this rotating universe you can end up in your own past. ” (January 11, 2023) Our universe, as it happens, is not Read More ›