A term you'd expect to hear on The Big Bang Theory, what huge unit of measurement is equal to 3.26 light years?

According to the site Earthsky.org: "A parsec – a unit of distance equal to about 19 trillion miles (more than 30 trillion km) – is more closely related to how astronomers go about the business of figuring out the size of the universe."

Asked by Tom Cohen · Last updated 5 years ago · 14.1K views