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• space-age
  space-age

  adjective

  pertaining to or characteristic of the Space Age.
• Space Age
  Space Age

  noun

  the period in modern history characterized by space exploration, usually considered as beginning October 4, 1957, when the Soviet Union launched the first artificial satellite, Sputnik I, into orbit around the earth.
• space age
  space age

  noun

  the period in which the exploration of space has become possible

space-age

¹ American  

[speys-eyj] / ˈspeɪsˌeɪdʒ /

adjective

1. pertaining to or characteristic of the Space Age.

2. using the latest or most advanced technology or design.

3. modern; up-to-date; forward-looking.

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Space Age ² American  

Or space age

noun

1. the period in modern history characterized by space exploration, usually considered as beginning October 4, 1957, when the Soviet Union launched the first artificial satellite, Sputnik I, into orbit around the earth.

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space age British  

noun

1. the period in which the exploration of space has become possible

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adjective

1. (usually prenominal) futuristic or ultramodern, esp when suggestive of space technology

Etymology

Origin of space-age

First recorded in 1955–60

Example Sentences

It seemed perfect for the optimistic Space Age.

From The Wall Street Journal • Apr. 11, 2026

We’re in a new phase of the Space Age.

From Slate • Dec. 9, 2025

Musk’s vision of the future is all about bringing AI into the physical world—a Jetsons-style Space Age.

From Barron's • Oct. 3, 2025

But human culture has become vastly more sophisticated, from the Stone Age to the Space Age, as new advances have been incorporated.

From Science Daily • Nov. 27, 2024

With those words, on the evening of October 4, 1957, NBC radio announced the start of the Space Age.

From "Fallout: Spies, Superbombs, and the Ultimate Cold War Showdown" by Steve Sheinkin