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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

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

"We continue to learn all about our spacecraft as we operate it in deep space with crew for the first time," Hawkins said.

From Barron's • Apr. 3, 2026

Most people are familiar with the idea of deep space, but scientists also study something called deep time.

From Science Daily • Mar. 14, 2026

“Maybe it’s one of those towers that tries to make contact with deep space or track weather.”

From "Beauty Queens" by Libba Bray