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
Beyond the Beyond (manga) released in limited edition versions that featured different covers and additional items, such as CDs. The series was licensed for an English language release in North America by Tokyopop in 2005. The first volume was released in January 2006; as of August 2007, four volumes have been released. The fifth English volume was solicited for release in September 2008, but the release was cancelled in July 2008. The series is also being released in English in Singapore by Chuang Yi under the title "There, Beyond the Beyond"; as of June 2008, it has released five volumes of the series, but