Synonyms of light-year

light-year

noun

ˈlīt-ˌyir 

as in world

a huge physical or conceptual distance

my sister and I are close in age, but personality-wise, there are light-years between us

Synonyms & Similar Words

• world
• galaxy
• way
• long haul
• infinity
• country mile

Antonyms & Near Antonyms

• striking distance
• shouting distance
• inch
• hairbreadth
• hair
• hop, skip, and jump
• stone's throw

Example Sentences

Recent Examples of light-year

But one stellar system about 72 light-years from Earth isn’t quite like anything else researchers have ever seen. — Andrew Paul, Popular Science, 22 July 2026

Later this week, the moon will pass close to Antares in the constellation Scorpius, a massive red supergiant star about 550 light-years from Earth. — Jamie Carter, Forbes.com, 20 July 2026

But a study in Wednesday’s issue of Nature describes observations of helium being lost from the atmosphere of an exoplanet orbiting the star LHS 1140, about 50 light-years away. — John Timmer, ArsTechnica, 16 July 2026

Rubin released its first images last year, including colorful shots of the Trifid and Lagoon nebulas located thousands of light-years from Earth. — Adithi Ramakrishnan, Los Angeles Times, 7 July 2026