The universe's most energetic particles travel at nearly light speed

Cosmic Vision: Fast and Furious · 52:03 · Video: Gresham College · Watch at the source

In short: What happens when particles from deep space reach extreme velocities? This lecture by Katherine Blundell explores the origins of cosmic rays and what these high-energy travelers mean for our planet.

Cosmic rays are highly energetic particles that originate from sites of extreme particle acceleration throughout the universe. Because they travel at nearly the speed of light, they provide a window into some of the most violent and powerful physical processes in existence.

The lecture examines the mechanics behind how these particles achieve such immense energy levels, their specific points of origin in the cosmos, and the broader implications for Earth's environment.

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