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Anaxagoras summary

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Know about Anaxagoras, his work on cosmology, and the discovery of the true cause of eclipses

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Below is the article summary. For the full article, see Anaxagoras.
Anaxagoras
AnaxagorasAnaxagoras, 15th-century woodcut.

Anaxagoras, (born c. 500, Clazomenae, Anatolia—died c. 428 bc, Lampsacus), Greek philosopher. Though only a few fragments of his writings have survived, he is remembered for his cosmology and for his discovery of the true cause of eclipses. His cosmology grew out of the efforts of earlier pre-Socratics to explain the physical universe in terms of a single element. The most original aspect of his system was his doctrine of nous (“mind,” or “reason”), according to which the cosmos, including all living things, was created by mind in a process of attraction of “like to like”; mind also accounts for the power of living things to extract nourishment from surrounding substances.

Examine the observable universe's place within the whole universe
cosmology Summary
Cosmology, field of study that brings together the natural sciences, particularly astronomy and physics, in a joint effort to understand the physical universe as a unified whole. The “observable universe” is the region of space that humans can actually or theoretically observe with the aid of
total solar eclipse
eclipse Summary
Eclipse, in astronomy, complete or partial obscuring of a celestial body by another. An eclipse occurs when three celestial objects become aligned. From the perspective of a person on Earth, the Sun is eclipsed when the Moon comes between it and Earth, and the Moon is eclipsed when it moves into