interstellar

adjective

in·​ter·​stel·​lar ˌin-tər-ˈste-lər 

: located, taking place, or traveling among the stars especially of the Milky Way galaxy

Examples of interstellar in a Sentence

Recent Examples on the Web

Most recently, the telescope was instrumental in documenting comet 3I/ATLAS, the third interstellar object ever detected passing through the solar system. — Andrew Paul, Popular Science, 2 Nov. 2026

Using the James Webb Space Telescope (JWST), scientists have found that the interstellar comet 3I/ATLAS was built from tiny grains of ice mixed with dust that are quite different from the solar system’s comets. — Keith Cooper, Space.com, 2 Nov. 2026

Scientists thought that atoms in the interstellar medium would transition to either the cold or warm state almost instantly, leaving basically no unstable, intermediate ISM behind. — Perri Thaler, Quanta Magazine, 30 Oct. 2026

There is no scientific law against the idea, but nor is there any reason interstellar travel must be impossible. — Venki Ramakrishnan, Scientific American, 15 Sep. 2026

Word History

First Known Use

1626, in the meaning defined above

Rhymes for interstellar

• cerebellar
• circumstellar
• columellar
• storyteller
• beller
• cellar
• dweller
• eller
• feller
• meller
• sellar
• seller

Kids Definition

interstellar

adjective

in·​ter·​stel·​lar ˌint-ər-ˈstel-ər 

: located or taking place among the stars

interstellar space