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1961 – Robert Dicke argues that carbon -based life can only arise when the gravitational force is small, because this is when burning stars exist; first use of the weak anthropic principle. 1963 – Maarten Schmidt discovers the first quasar; these soon provide a probe of the universe back to substantial redshifts.
The physical universe is defined as all of space and time [a] (collectively referred to as spacetime) and their contents. [10] Such contents comprise all of energy in its various forms, including electromagnetic radiation and matter, and therefore planets, moons, stars, galaxies, and the contents of intergalactic space.
Plato (left) and Aristotle, depicted here in The School of Athens, both developed philosophical arguments addressing the universe's apparent order (). Teleology (from τέλος, telos, 'end', 'aim', or 'goal', and λόγος, logos, 'explanation' or 'reason') [1] or finality [2] [3] is a branch of causality giving the reason or an explanation for something as a function of its end, its ...
Hildegard von Bingen, who is frequently used as an example of a walking encyclopedia. To have encyclopedic knowledge is to have "vast and complete" [1] knowledge about a large number of diverse subjects. A person having such knowledge might, sometimes humorously [2] be referred as "a human encyclopedia" or "a walking encyclopedia". [3] [4]
The expansion of the universe is the increase in distance between gravitationally unbound parts of the observable universe with time. [1] It is an intrinsic expansion, so it does not mean that the universe expands "into" anything or that space exists "outside" it. To any observer in the universe, it appears that all but the nearest galaxies ...
Encyclopedia. Entry for the French word amour ('love') in a paper encyclopedia (Larousse Universel) and in an online encyclopedia (wikimini.org) Title page of Lucubrationes, 1541 edition, one of the first books to use a variant of the word encyclopedia in the title. An encyclopedia (American English) or encyclopaedia (British English) [1] (from ...
Anaximander. Anaximander (/ æˌnæksɪˈmændər / an-AK-sih-MAN-dər; Greek: Ἀναξίμανδρος Anaximandros; c. 610 – c. 546 BC) [3] was a pre-Socratic Greek philosopher who lived in Miletus, [4] a city of Ionia (in modern-day Turkey). He belonged to the Milesian school and learned the teachings of his master Thales.
Thesaurus. A thesaurus (pl.: thesauri or thesauruses), sometimes called a synonym dictionary or dictionary of synonyms, is a reference work which arranges words by their meanings (or in simpler terms, a book where one can find different words with similar meanings to other words), [1][2] sometimes as a hierarchy of broader and narrower terms ...