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Synonyms

interplanetary space

American  
[in-ter-plan-i-ter-ee spays] / ˌɪn tərˈplæn ɪˌtɛr i ˈspeɪs /

noun

  1. Astronomy. the space between planets.


interplanetary space Scientific  
/ ĭn′tər-plănĭ-tĕr′ē /
  1. See under space


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.

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Meanwhile, an interplanetary space race between the U.S.,

From The Wall Street Journal Mar. 30, 2026

The fast solar wind -- a supersonic stream of charged particles -- originates mainly in the Sun's polar coronal holes and fills most of the heliosphere, shaping conditions in interplanetary space.

From Science Daily Oct. 14, 2025

"If successful, it would be China's first samples collected from interplanetary space," Zhang said, adding that a spacecraft will be sent to fly around and then land on the asteroid to collect the samples.

From Reuters Apr. 24, 2023

Nearly two dozen spacecraft destined for Mars have failed in their efforts, some on the launch pad, some in interplanetary space, and some on the Martian surface.

From Slate Apr. 19, 2022

It had been almost two years sailing through interplanetary space.

From "Cosmos" by Carl Sagan

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