paulas your being ignorant again
this is the astronomical soceity view , the people that invented the light year read again
light-year* (symbol: *ly*), sometimes written *light year* or *lightyear*, is a unit of length used in astronomy
, though it is sometimes mistaken for a unit of time. It is equal to just under 10 trillion
kilometres
(or about 6 trillion miles
).[note 1]
As defined by theInternational Astronomical Union
(IAU), a light-year is the distance that light travels in vacuum
in one Julian year
.[1]
as i said before earth was created first then the heavens/u