54K views · 2.5K reactions | Scientists discuss the impact of cosmic rays and their potential involvement in one of the most significant extinction periods. #HowTheUniverseWorks Watch full episodes on discovery+: https://bit.ly/3HfHr6e | Love Science | Facebook

Why are cosmic rays high energy particles? Highly energetic particles from outer space travelling at the speed of light, known as cosmic rays, originate from the sites of extreme particle acceleration in the Universe. This lecture considers just how energetic these rapid particles are, the origins of their extreme energies and the implications for Earth. Watch Now #Astronomy #Astrophysics | Gresham College