deep space

noun

: space well outside the earth's atmosphere and especially that part lying beyond the earth-moon system

Examples of deep space in a Sentence

Recent Examples on the Web

That’s equivalent to 193 days and 131 days, respectively, of unnecessary deep space radiation exposure, the scientists noted. — Marcia Dunn, Los Angeles Times, 15 Aug. 2026

Getting real, not simulated, data on the vest’s performance would mean sending it onboard an Orion spacecraft all the way to deep space and waiting for a solar storm to happen, which is hardly feasible. — Jacek Krywko, ArsTechnica, 13 Aug. 2026

In comparison, the Space Launch System rocket current Block 1B version can handle 38 metric tons, or 84,000 pounds, to deep space including the Orion spacecraft and its crew. — Richard Tribou, The Orlando Sentinel, 13 Aug. 2026

Long baskets can be perfect for stowing bags of chips, cookies, or nuts in deep spaces. — Kelsey Mulvey, Southern Living, 8 Aug. 2026

Word History

First Known Use

1865, in the meaning defined above

Rhymes for deep space

• abase
• airspace
• apace
• backspace
• biface
• birthplace
• blackface
• boldface
• bookcase
• braincase
• briefcase
• carcase

Kids Definition

deep space

noun

: space outside the earth's atmosphere and especially that part lying beyond the earth-moon system