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Edwin Powell Hubble
Introduction, Important Definitions and Related Concepts:
Edwin Powell Hubble (November 20, 1889 – September 28, 1953) was an American astronomer. He profoundly changed astronomers' understanding of the nature of the universe by demonstrating the existence of other galaxies besides the Milky Way. He also discovered that the degree of redshift observed in light coming from a galaxy increased in proportion to the distance of that galaxy from the Milky Way. This became known as Hubble's law, and would help establish that the universe is expanding. He was born to an insurance executive in Marshfield, Missouri and moved to Wheaton, Illinois in 1898. In his younger days he was noted more for his athletic prowess than his intellectual abilities, although he did earn good grades in every subject except for spelling. He won seven first places and a third place in a single high school track meet in 1906. That year he also set a state record for high jump in Illinois. His studies at the University of Chicago concentrated on mathematics, astronomy, and philosophy which led to a BS degree in 1910. November is the eleventh month of the year in the Gregorian Calendar and one of four Gregorian months with the length of 30 days. November retained its name (from the Latin novem meaning "nine") when January and February were added to the Roman calendar. The birthstone for November is either topaz or citrine and the birthflower is the chrysanthemum. November begins in western tropical astrology with the sun in the sign of Scorpio and ends in the sign of Sagittarius (astrology). Astronomically speaking, the sun actually begins in the constellation of Libra, passes through Scorpius from approximately the 24th through the 29th and ends in the constellation of Ophiuchus, which is the only zodiacal constellation that is not associated with an astrological sign. November starts on the same day of the week as both February and March in common years. A poem which is often told in schools in the United Kingdom is "No" by Thomas Hood, playing on how the name "November" can be extended to other phrases beginning with no. Hood's poem suggests that melancholy moods associated with this month. All Saints' Day (formerly All Hallows Day), a Christian holy day, is celebrated on November 1, the day after Halloween. 20 (twenty) is the natural number following 19 and preceding 21. A group of twenty units may also be referred to as a score. Twenty is a composite number, its proper divisors being 1, 2, 4, 5 and 10. Skipping 2 and adding the other divisors gives 20, hence 20 is a semiperfect number, and since it is not divisible by any of the smaller semiperfect numbers, it is a primitive semiperfect number. 20 is the smallest abundant number that is not a multiple of 3. 20 is the second positive integer with a prime factorization of the form , where q is a prime. Its aliquot sum is 22, and its aliquot sequence is (20,22,14,10,8,7,1,0). It is also the sum of the first four triangular numbers, making it a tetrahedral number. 20 is the total number of digits on the human body, which makes it a convenient number system radix; such number systems are called vigesimal. Year 1889 (MDCCCLXXXIX) was a common year starting on Tuesday (link will display the full calendar) of the Gregorian calendar (or a common year starting on Sunday of the 12-day slower Julian calendar). January - March
March - German naval force shells a village in Samoa, destroying some American property. Three American warships enter the Samoan harbor and were prepare to fire on the three German warships found there. Before guns are fired, a hurricane blows up and sinks all the ships, American and German. A compulsory armistice is called because of the lack of warships.
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