observation
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observation
Serendipity occurs in a situation where something is found that was not expected to be found.
Observation is an abstract noun because it represents a concept or idea rather than a physical object. It refers to the act of noticing or perceiving something through the senses.
The action of seeing or noticing refers to using one's visual perception to become aware of something in one's environment. It involves the process of light entering the eyes and being interpreted by the brain to form a mental representation of the object or scene being viewed.
The term that best describes the occurrence of total solar eclipses is "syzygy," which refers to the alignment of the Earth, the Moon, and the Sun in a straight or nearly straight line, causing the Moon to appear to block out the Sun from view on Earth.