Monday, February 26 2018

All day
All times

More than 100 years after the discovery of cosmic rays we still know little about the origin of the most energetic particles in the universe. These cosmic particles are mainly atomic nuclei which are accelerated by nature to energies far beyond the reach of human-made accelerators. The highest energy particles seem to originate from other galaxies, but neither these extragalactic sources nor the most energetic sources in our galaxy, the Milky Way, are known.