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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.

Victor Glover became the first black astronaut to reach deep space; Christina Koch the first woman; Jeremy Hansen the first Canadian.

From BBC • Apr. 16, 2026

Artemis III will stick in near-Earth orbit — closer to where the International Space Station sits as opposed to traveling into deep space like Artemis II.

From Los Angeles Times • Apr. 12, 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

Mission specialist Christina Koch, the first woman to venture into deep space, said preparing for the 10-day journey was akin to planning for a camping trip.

From Barron's • Apr. 4, 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