- The Oh-My-God particle was an ultra-high-energy cosmic ray detected on 15 October 1991 by the Fly’s Eye camera in Dugway Proving Ground, Utah, United States. As of 2023, it is the highest-energy cosmic ray ever observed. Its energy was estimated as (3.2�0.9)�1020 eV (320 exa-eV). The particle’s energy was unexpected and called into question prevailing theories about the origin and propagation of cosmic rays.
- Russia (Wikipedia)
Russia (Russian: Россия, Rossiya, [rɐˈsʲijə]), or the Russian Federation, is a transcontinental country spanning Eastern Europe and Northern Asia. It is the largest country in the world, covering over 17,098,246 square kilometres (6,601,670 sq mi), and encompassing one-eighth of Earth’s inhabitable landmass. Russia extends across eleven time zones and shares land boundaries with fourteen countries, more than any other country but China. It is the world’s ninth-most populous country and Europe’s most populous country, with a population of 146 million people. The country’s capital and largest city is Moscow, the largest city entirely within Europe. Saint Petersburg is Russia’s cultural centre and second-largest city. Other major urban areas include Novosibirsk, Yekaterinburg, Nizhny Novgorod, and Kazan.