Empty space

In science, empty space, aka nothingness, void, or vacuum, refers to a "space" that has no "things" in it or within its boundary.

Quotes
The following are related quotes:

“This [separation of two plane surfaces] experiment shows the aversion of nature for ‘empty space’, even during the brief moment required for the outside air to rush in and fill up the region between the two plates.”
Galileo (1638), Dialogues Concerning the Two New Sciences (pg. 11) [1]

Nothingness [void / vacuum / empty space] contains all things; it is more precious than gold, free from birth and destruction, more pleasant than the sight of pure light, more noble than the blood of kings, comparable with the sky and higher than the stars, more powerful than a bolt of lightning, perfect and rich in all its parts.”
Otto Guericke (1672), The Magdeburg Experiments on the Vacuum of Space (pg. 99); cited by Edward Grant (1981) in Much Ado About Nothing (pg. 216); cited by Helge Kragh (2014) in The Weight of the Vacuum (pg. 6) [1]

References
1. Galileo. (1632). Dialogues Concerning the Two New Sciences (translators: Henry Crew; Alfonso Salvio) (pg. 11). Macmillan, 1914.
2. Grant, Edward. (1981). Much Ado About Nothing: Theories of Space and Vacuum from the Middle Ages to the Scientific Revolution (gold, pg. 216; clepsydra, 7+ pgs, quote, pg. 83). Cambridge.

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