Downrange
Encyclopedia
Downrange is the horizontal distance traveled by a spacecraft
Spacecraft
A spacecraft or spaceship is a craft or machine designed for spaceflight. Spacecraft are used for a variety of purposes, including communications, earth observation, meteorology, navigation, planetary exploration and transportation of humans and cargo....

, or the spacecraft's horizontal distance from the launch site
Launch pad
A launch pad is the area and facilities where rockets or spacecraft lift off. A spaceport can contain one or many launch pads. A typical launch pad consists of the service and umbilical structures. The service structure provides an access platform to inspect the launch vehicle prior to launch....

. More often, it is used as an adverb or adjective specifying the direction of that travel being measured in a horizontal direction.

In military slang, downrange is a term for being deployed overseas, usually in a war zone. It is also the name of a comic strip published in the newspaper Stars and Stripes
Stars and Stripes (newspaper)
Stars and Stripes is a news source that operates from inside the United States Department of Defense but is editorially separate from it. The First Amendment protection which Stars and Stripes enjoys is safeguarded by Congress to whom an independent ombudsman, who serves the readers' interests,...

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