the.com/deep space
the part of the universe with no landlords, no atmosphere, and no rush.
means the vast, near-total vacuum beyond a planet's immediate neighborhood, where gravity gets faint and distances stop making sense.
from the term drifted out of early 20th-century radio and radar jargon for signals reaching past normal range, then got adopted by astronomy and sci-fi once humans started actually aiming things past the moon.
nasa's thresholddefines deep space as past the moon's orbit
voyager 1first craft to reach true interstellar space, 2012
temperaturehovers near absolute zero, about 2.7 kelvin
emptinessaverage density: less than one atom per cubic meter