Extragalactic cosmic ray Extragalactic cosmic ray Extragalactic cosmic rays are very-high-energy particles that flow into the Solar System from beyond the Milky Way galaxy. The energies these particles possess are in excess of 10 eV. Unlike solar or galactic cosmic rays, little is known about the origins of extragalactic cosmic rays. This is largely due to a lack of statistics: only about 1 extragalactic cosmic ray particle per square meter per year reaches the Earth's surface (see figure). There are many ideas about which processes may be responsible for cosmic rays with such high energies. In the 'bottom-up' approach, cosmic rays gain more
To the Green Fields Beyond (game) Tank Corps and "From mud, through blood, to the green fields beyond" is used as a slogan by the Royal Tank Regiment. To the Green Fields Beyond (game) To the Green Fields Beyond is a game created in 1978 by SPI, or Simulations Publications Incorporated. It is about the battle of Cambrai, which took place from November 20 to December 7, 1917. At Cambrai, the British and the French tried to use the newly invented tank (land ship as it was called at the time) to break through German front lines. It won the Charles S. Roberts Award for "Best