Synonyms|89Antonyms|3|Broader|92Narrower|238Related|111

76 entries under system topic. ×

1
event horizon(noun, space, cosmos)
1
exoplanet(noun, space, cosmos)
1
falling star(noun, space, cosmos)
1
full moon(noun, space, cosmos)
1
gamma ray(noun, space, cosmos)
1
gas giant(noun, space, cosmos)
1
gegenschein(noun, space, cosmos)
1
gibbous moon(noun, space, cosmos)
1
globular cluster(noun, space, cosmos)
1
gravitation(noun, space, cosmos)
1
gravitational constant(noun, space, cosmos)
1
gravitational lens(noun, space, cosmos)
1
gravity(noun, space, cosmos)
1
half moon(noun, space, cosmos)
1
hyperbolic orbit(noun, space, cosmos)
1
hypernova(noun, space, cosmos)
1
ice giant(noun, space, cosmos)
1
inferior planets(noun, space, cosmos)
1
inner planets(noun, space, cosmos)
1
interstellar dust(noun, space, cosmos)
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ChicagoSmart Define. 2016. "astronomy thesaurus" https://smartdefine.org/astronomy/thesaurus/narrower (accessed September 26, 2026).
HarvardSmart Define 2016, astronomy thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/astronomy/thesaurus/narrower>.
MLASmart Define. "astronomy thesaurus" 21 January 2016. Web. 26 September 2026. <https://smartdefine.org/astronomy/thesaurus/narrower>