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by
Ciro Santilli
(
@cirosantilli,
32
)
Light year (ly)
tags:
Astronomical measurement unit
Ancestors
Length
International System of Units
List of systems of units
System of units
Physics
Natural science
Science
Index
Synonyms
cirosantilli/ly
cirosantilli/kly
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Light-year
by
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on
1970-01-01
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