Tag Archives: simulations

Lightning on Earth is sparked by a powerful chain reaction from outer space, simulations show

Lightning on Earth is sparked by a powerful chain reaction from outer space, simulations show

The energy needed for thunderstorms could come from an avalanche of electrons seeded by extraterrestrial cosmic rays, a new study claims. Scientists already knew that lightning is an electrical discharge between thunderclouds and Earth’s surface, but exactly how storm clouds obtain an electric field powerful enough to hurl a bolt has remained a mystery for centuries. Now, a new study …

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100 undiscovered galaxies may be orbiting the Milky Way, supercomputer simulations hint

100 undiscovered galaxies may be orbiting the Milky Way, supercomputer simulations hint

The Milky Way may be surrounded by dozens of yet-to-be-detected satellite galaxies, scientists claim. Using the highest-resolution simulation of our galaxy’s dark matter — an invisible entity that shapes the large-scale structure of the universe — and new mathematical models, cosmologists predict that more than 100 additional satellite galaxies beyond the ones already cataloged may be swirling around our own. …

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