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  2. Fermi paradox - Wikipedia

    en.wikipedia.org/wiki/Fermi_paradox

    This is an accepted version of this page This is the latest accepted revision, reviewed on 24 December 2024. Problem of the lack of evidence for alien life despite its apparent likelihood 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 the discrepancy between ...

  3. The Void (philosophy) - Wikipedia

    en.wikipedia.org/wiki/The_Void_(philosophy)

    The world has no empty space within it, but forms one united whole. This is a necessary result of the sympathy and tension which binds together things in heaven and earth." [ This quote needs a citation ] Chrysippus discusses the Void in his work On Void and in the first book of his Physical Sciences ; so too Apollophanes in his Physics ...

  4. Śūnyatā - Wikipedia

    en.wikipedia.org/wiki/Śūnyatā

    Rangtong (Wylie: rang stong; 'self-empty') refers to views which oppose shentong and state that ultimate reality is that which is empty of self-nature in a relative and absolute sense; that is to say ultimate reality is empty of everything, including itself.

  5. Tzimtzum - Wikipedia

    en.wikipedia.org/wiki/Tzimtzum

    So God is eternal and the infinity in time and space is his nature: we cannot think the infinity of causes about the infinity of Universe or Creation because in the first case the infinity of numbers is only possible in theory but God is the Creator and no one can be like God, “the First Cause”: it is impossible thinking about two God ...

  6. Eternalism (philosophy of time) - Wikipedia

    en.wikipedia.org/wiki/Eternalism_(philosophy_of...

    Augustine of Hippo wrote that God is outside of time—that time exists only within the created universe. Thomas Aquinas took the same view, and many theologians agree. On this view, God would perceive something like a block universe, while time might appear differently to the finite beings contained within it. [16]

  7. Empty space - Wikipedia

    en.wikipedia.org/wiki/Empty_space

    Outer space, especially the relatively empty regions of the universe outside the atmospheres of celestial bodies; Vacuum, a volume of space that is essentially empty of matter, such that its gaseous pressure is much less than atmospheric pressure; Free space, a perfect vacuum as expressed in the classical physics model

  8. Kalam cosmological argument - Wikipedia

    en.wikipedia.org/wiki/Kalam_cosmological_argument

    "Even if the universe has a beginning in time, in the light of recently proposed cosmological theories this beginning may be uncaused. Despite Craig's claim that theories postulating that the universe 'could pop into existence uncaused' are incapable of 'sincere affirmation,' such similar theories are in fact being taken seriously by scientists."

  9. Olbers's paradox - Wikipedia

    en.wikipedia.org/wiki/Olbers's_Paradox

    The redshift hypothesised in the Big Bang model would by itself explain the darkness of the night sky even if the universe were infinitely old. In the Steady state theory the universe is infinitely old and uniform in time as well as space. There is no Big Bang in this model, but there are stars and quasars at arbitrarily great distances.