outer space

noun

: space immediately outside the earth's atmosphere
broadly : interplanetary or interstellar space

Examples of outer space in a Sentence

a satellite in outer space Is there life in outer space?
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
That means no country may claim territory in outer space, and all have the right to access all areas of the moon and other celestial bodies freely. Michelle L.d. Hanlon, Space.com, 20 June 2025 Like Musk, Venis is obsessed with going to outer space and with using his enormous war chest to build hyperscale data centers to create powerful anti-woke AI systems. Andrew R. Chow, Time, 31 May 2025 But cheers were somewhat subdued until about 10 minutes after launch—when operators officially determined that the spacecraft’s trajectory was nominal, taking it on a ballistic suborbital path through outer space. Gayoung Lee, Scientific American, 28 May 2025 In the Next Big Idea Club, Fleck mentioned the example of someone believing that an alien invasion from outer space is imminent and feeling anxious and fearful as a result. Bruce Y. Lee, Forbes.com, 26 May 2025 See All Example Sentences for outer space

Word History

First Known Use

1842, in the meaning defined above

Time Traveler
The first known use of outer space was in 1842

Browse Nearby Words

Cite this Entry

“Outer space.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/outer%20space. Accessed 1 Jul. 2025.

Kids Definition

outer space

noun
: space entry 1 sense 4
especially : the region beyond the solar system

More from Merriam-Webster on outer space

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!