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

76 entries under system topic. ×

1
celestial equator(noun, space, cosmos)
1
constellation(noun, space, cosmos)
1
coriolis force(noun, space, cosmos)
1
cosmic rays(noun, space, cosmos)
1
cosmonaut(noun, space, cosmos)
1
crater(noun, space, cosmos)
1
crescent moon(noun, space, cosmos)
1
dark matter(noun, space, cosmos)
1
deep space(noun, space, cosmos)
1
deneb(noun, space, cosmos)
1
doppler shift(noun, space, cosmos)
1
double star(noun, space, cosmos)
1
drake equation(noun, space, cosmos)
1
dwarf planet(noun, space, cosmos)
1
dwarf star(noun, space, cosmos)
1
earth(noun, space, cosmos)
1
eclipse(noun, space, cosmos)
1
ecliptic(noun, space, cosmos)
1
elliptical orbit(noun, space, cosmos)
1
escape velocity(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>