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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.

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

With all of the data, Platts said his team hoped to better understand the variation between low earth orbit and deep space.

From Barron's • Apr. 10, 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

Although this capability has not yet been demonstrated, future tests are expected to explore it, potentially opening new possibilities for deep space travel.

From Science Daily • Apr. 3, 2026

Commander Lewis and the surviving crew, via long-range communication from Hermes, gave eulogies for their departed comrade from deep space.

From "The Martian" by Andy Weir