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21 ore fa · April 18, 2024 at 11:58 AM. Scientists say they have found new evidence that there is a hidden planet in our solar system. For years, some astronomers have been suggesting that unusual behaviour ...
21 ore fa · Etymology The English word sun developed from Old English sunne. Cognates appear in other Germanic languages, including West Frisian sinne, Dutch zon, Low German Sünn, Standard German Sonne, Bavarian Sunna, Old Norse sunna, and Gothic sunnō. All these words stem from Proto-Germanic * sunnōn. This is ultimately related to the word for sun in other branches of the Indo-European language ...
21 ore fa · The observable universe contains as many as an estimated 2 trillion galaxies and, overall, as many as an estimated 10 24 stars – more stars (and earth-like planets) than all the grains of beach sand on planet Earth; but less than the total number of atoms estimated in the universe as 10 82; and the estimated total number of stars in an inflationary universe (observed and unobserved), as 10 100.
21 ore fa · Dark matter is implied by gravitational effects which cannot be explained by general relativity unless more matter is present than can be seen. Such effects occur in the context of formation and evolution of galaxies , [1] gravitational lensing , [2] the observable universe 's current structure, mass position in galactic collisions , [3] the motion of galaxies within galaxy clusters , and ...
21 ore fa · Nikita Kruschev. Leonid Brezhnev †. Yuri Andropov †. Konstantin Chernenko †. The Cold War was a period of geopolitical tension between the United States and the Soviet Union and their respective allies, the Western Bloc and the Eastern Bloc, that started in 1947 and lasted to 1991.
