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Why do large reflecting telescopes, like the Keck Observatories, have segmented mirrors?
Percentage
A fraction or ratio expressed as a part of 100.
Arousal
A physiological and psychological state of being awake or reactive to stimuli, involving the brain, hormones, and physical responses.
States
Conditions or situations that are temporary and can change, in contrast to traits which are more enduring characteristics of individuals or entities.
Extremely Low Birth Weight
Refers to newborns with a birth weight of less than 1000 grams (2 pounds, 3 ounces).
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