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Definitions

deep space

NOUN
outer space
Synonyms
WEAK
celestial spaces cosmic space cosmos intercosmic space intergalactic space interplanetary space interstellar space metagalactic space ocean of emptiness outer space region beyond Earth's solar system the heavens the universe the void the void above

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

While hurtling through deep space and zipping around the Moon, the Artemis astronauts took thousands of photographs, amassing a stunning portfolio of images.

From Barron's • Apr. 11, 2026

Unlike earlier missions, Artemis is designed with longer-term goals in mind, including future crewed landings and the development of infrastructure that could support deep space exploration.

From Salon • Apr. 11, 2026

After a powerful liftoff Wednesday, Artemis II’s journey to the moon has been about as mundane as a deep space mission can get.

From Los Angeles Times • Apr. 6, 2026

In support of future deep space exploration, the agency is advancing nuclear power and propulsion technologies designed to expand mission capabilities and enable travel farther into the solar system.

From Science Daily • Jan. 25, 2026

Everyone now began to imagine looking at the Earth from deep space.

From "The Invention of Science" by David Wootton