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17 hours ago · This is an accepted version of this page This is the latest accepted revision, reviewed on 22 September 2024. Discrepancy between lack of evidence of advanced alien life and apparently high likelihood it exists This article is about the absence of clear evidence of extraterrestrial life. For a type of estimation problem, see Fermi problem. Enrico Fermi (Los Alamos 1945) The Fermi paradox is ...
- Dark Forest Hypothesis
The dark forest hypothesis is the conjecture that many alien...
- Planetarium Hypothesis
The planetarium hypothesis, conceived in 2001 by Stephen...
- Fermi Problem
A Fermi problem (or Fermi quiz, Fermi question, Fermi...
- Dark Forest Hypothesis
17 hours ago · Messier 87. Virgo A, Virgo X-1, NGC 4486, UGC 7654, PGC 41361, VCC 1316, Arp 152, 3C 274, [5] 3U 1228+12. [9] Messier 87 (also known as Virgo A or NGC 4486, generally abbreviated to M87) is a supergiant elliptical galaxy in the constellation Virgo that contains several trillion stars. One of the largest and most massive galaxies in the local ...
- Abundance(solar values)
- 0.67 ± 0.05
- 0.95 ± 0.03
- 1.41 ± 0.12
17 hours ago · Time in space. 9d 19h 54m [2] Missions. STS-95. Mission insignia. John Herschel Glenn Jr. (July 18, 1921 – December 8, 2016) was an American Marine Corps aviator, astronaut, businessman, and politician. He was the third American in space and the first American to orbit the Earth, circling it three times in 1962. [3]
17 hours ago · The following is a list of notable deaths in December 2017. Entries for each day are listed alphabetically by surname. A typical entry lists information in the following sequence: Name, age, country of citizenship at birth, subsequent country of citizenship (if applicable), what subject was noted for, cause of death (if known), and reference.
17 hours ago · (1858–1947) Although relativity resolved the electromagnetic phenomena conflict demonstrated by Michelson and Morley, a second theoretical problem was the explanation of the distribution of electromagnetic radiation emitted by a black body ; experiment showed that at shorter wavelengths, toward the ultraviolet end of the spectrum, the energy ...
17 hours ago · In den Fernsehserien und Filmen des Star-Trek -Universums werden Hunderte verschiedene fiktive Spezies dargestellt und/oder erwähnt. Dieser Artikel beschreibt ausschließlich jene Völker, die in Star Trek regelmäßige bzw. wesentliche Auftritte haben. Emblem der Vereinigten Föderation der Planeten.
17 hours ago · Das Unternehmen Harley-Davidson wird 1903 in Milwaukee, Wisconsin, USA, von William S. „Bill“ Harley (1880–1943) und Arthur Davidson (1881–1950), sowie später William A. Davidson und Walter Davidson (1877–1942) als Harley-Davidson Moto Co. gegründet. Das Unternehmen Kraft bzw. Kraft Foods wird in Chicago von James Lewis Kraft ...
