interstellar

American  

[in-ter-stel-er] / ˌɪn tərˈstɛl ər /

adjective

1. Astronomy. situated or occurring between the stars.

   interstellar dust.

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interstellar British  

/ ˌɪntəˈstɛlə /

adjective

1. conducted, or existing between two or more stars

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Etymology

Origin of interstellar

First recorded in 1620–30; inter- + stellar

Example Sentences

Here, siblings Mario and Luigi team with Princess Peach and Toad on an interstellar adventure and face off against the nefarious fire-breathing Bowser and his son.

From The Wall Street Journal • Mar. 29, 2026

"Every interstellar comet so far has been a surprise," added Zexi Xing, postdoctoral researcher and lead author of the study.

From Science Daily • Feb. 11, 2026

Under these carefully controlled conditions, the team studied how particles behave when exposed to radiation, closely matching what happens in real interstellar space.

From Science Daily • Jan. 21, 2026

"We saw that the glycine molecules started reacting with each other to form peptides and water. This indicates that the same process occurs in interstellar space," Alfred Thomas Hopkinson says.

From Science Daily • Jan. 21, 2026

But this is unlikely to be a mere coincidence; more likely, the shock wave produced by the supernova compressed interstellar gas and dust and triggered the condensation of the solar system.

From "Cosmos" by Carl Sagan